Glorifying God by sending the gospel of Jesus Christ to the peoples of the world, by the power of the Holy Spirit.
Our Heart for the Nations...
At Cornerstone Presbyterian Church, missions is not a side project—it’s central to who we are.
We believe every follower of Christ is called to participate in God’s global story of redemption. Whether through prayer, giving, or going, we seek to make disciples of all nations in obedience to Christ’s Great Commission (Matthew 28:18–20).
We believe every follower of Christ is called to participate in God’s global story of redemption. Whether through prayer, giving, or going, we seek to make disciples of all nations in obedience to Christ’s Great Commission (Matthew 28:18–20).
Our Approach
EDUCATE
We share stories of how God is working through our missionaries and global partners, inspiring prayer and learning across our congregation.
We feature a missionary of the month each month and encourage the congregation to engage in focused prayer on Sundays and throughout the week for these missionaries.
We share stories of how God is working through our missionaries and global partners, inspiring prayer and learning across our congregation.
We feature a missionary of the month each month and encourage the congregation to engage in focused prayer on Sundays and throughout the week for these missionaries.
MOBILIZE
We equip people to serve—across the street or across the world—through events, trips, and partnerships.
Each year our youth ministry participated in a short term missions opportunity and regular visioning trips are offered in partnership with our missionaries.
We equip people to serve—across the street or across the world—through events, trips, and partnerships.
Each year our youth ministry participated in a short term missions opportunity and regular visioning trips are offered in partnership with our missionaries.
STRATEGIZE
We steward Cornerstone’s resources wisely, supporting long-term gospel work and faithful missionaries.
Each year Cornerstone dedicates at least 10% of its total income to global missions. We intentionally support fewer missionaries with greater depth—building long-term partnerships that multiply gospel impact.
We steward Cornerstone’s resources wisely, supporting long-term gospel work and faithful missionaries.
Each year Cornerstone dedicates at least 10% of its total income to global missions. We intentionally support fewer missionaries with greater depth—building long-term partnerships that multiply gospel impact.
Meet our Missionaries

Rick and Wendy Gray - Campus Ministry UD
Rick was born and raised in Delaware. He graduated from the University of Delaware, where he came to faith in Jesus Christ as a college senior. Rick prepared for the gospel ministry at Covenant Theological Seminary in St. Louis, MO. He has served as a youth pastor with Evangelical Presbyterian Church in Newark, DE from 1987 to 1989; a missionary with Mission To the World in rural Uganda from 1989 to 2010; and a campus pastor for international students at UD with Reformed University Fellowship from 2010 to 2023. In March 2023 he was called by EP to continue serving in the same position as the church’s assistant pastor for international student ministry.
Rick has the privilege and pleasure of welcoming UD students, scholars, and their family members from around the world in Jesus’ love; exploring the gospel with those who are interested; and equipping volunteers from local churches to join him in this fun and fruitful ministry. During UD’s academic year he leads a Monday night English conversation class, a Thursday evening “Dinner & Discussion” meeting, monthly social events and sightseeing trips, as well as helps our international friends with their practical needs.
In 2000, Rick married his wonder-filled wife, Wendy, whom he met in Uganda. The Grays have three sons: Grant (b. 2002), Aidan (b. 2005) and Chase (b. 2007). Rick loves good books to grow his relationship with God; spending time with his family; rooting for the Phillies, Eagles, and Sixers; chocolate, ice cream, and gourmet ethnic food (not necessarily all at the same time); and jogging (to work off the aforementioned calories)!
Rick has the privilege and pleasure of welcoming UD students, scholars, and their family members from around the world in Jesus’ love; exploring the gospel with those who are interested; and equipping volunteers from local churches to join him in this fun and fruitful ministry. During UD’s academic year he leads a Monday night English conversation class, a Thursday evening “Dinner & Discussion” meeting, monthly social events and sightseeing trips, as well as helps our international friends with their practical needs.
In 2000, Rick married his wonder-filled wife, Wendy, whom he met in Uganda. The Grays have three sons: Grant (b. 2002), Aidan (b. 2005) and Chase (b. 2007). Rick loves good books to grow his relationship with God; spending time with his family; rooting for the Phillies, Eagles, and Sixers; chocolate, ice cream, and gourmet ethnic food (not necessarily all at the same time); and jogging (to work off the aforementioned calories)!

Jim and Karen
Jim and Karen live and work in Dakar, Senegal, one of the largest and most influential cities in West Africa with a population that is 95% Muslim. At the invitation of the Presbyterian Church of Senegal, Jim has been working with the denomination to identify and train pastors for church planting through the Timothy House program—a two-year, residential, church-planter training program. Additionally, Jim serves as MTW’s regional director for West Africa and as chairman of West African Reformed Mission (WARM)—a partnering ministry that supports over 100 national missionaries working in West Africa. Working alongside Jim,
Karen serves as Jim’s administrative assistant and also assists with women’s ministry and a girls’ home ministry, for girls at risk of being sold into a growing child trafficking industry.
Prior to moving to Senegal, Jim served as senior pastor of a PCA church in Delaware from 1999 to 2017. In 2003 he began traveling to West Africa to build relationships, teach seminary classes, and collaborate for ministry.
Jim and Karen have six children, four sons-in-love, and four grandchildren.
Karen serves as Jim’s administrative assistant and also assists with women’s ministry and a girls’ home ministry, for girls at risk of being sold into a growing child trafficking industry.
Prior to moving to Senegal, Jim served as senior pastor of a PCA church in Delaware from 1999 to 2017. In 2003 he began traveling to West Africa to build relationships, teach seminary classes, and collaborate for ministry.
Jim and Karen have six children, four sons-in-love, and four grandchildren.

Isaac & Gloria Shaw – Delhi Bible Institute (DBI)
Twenty years ago, DBI reorganized the format of their
mission in North India. Under the leadership of Isaac
Shaw they moved towards an expanded ministry with
VISION 2025. Chuches in U.S. and Great Britan
responded to DBI’s invitation to join as partners to
support the ministries, not only with prayer and
finances, but also to send individuals on a short-term
mission trip. Individuals from Cornerstone have given
teaching help for adult and children programs.
Medical assistance has also been provided. We at
Cornerstone have been inspired as Isaac has preached and taught the Word to us on several
occasions. That partnership concept of a two-way exchange is relatively new as a missions approach.
Partnerships of this type are an effective strategy for ministry in countries where US missionaries are
not welcome.
We are thankful that God has made it possible for the comprehensive goals for 2025 have been
surpassed with amazing numbers. The goal of a ministry center in each capital in N. India has been
achieved, going from 3 to 12. The activities include a variety of programs to meet the six areas of
effort; 1. Equipping leaders, 2. Providing resources, 3. Loving our neighbors, 4. Helping the poor, 5.
Serving the capital cities by establishing ashrams (retreat study centers), 6. Partnering with
like-minded. The activities address the current needs of people of various age groups and various
income levels seeking to equip individuals to live a productive life that reflects all that scripture
addresses. This challenge is in the midst of an increasing amount of hostility towards non-Hindus in
India. That requires a unique commitment to walking a Christ filled life for believers and leaders.

Bruce Tarbell - Missionary in Budapest, Hungary
Bruce is a member of Cornerstone Presbyterian Church who has been a missionary in Budapest, Hungary for the past 3 years. He is serving as a math and science teacher at the International Christian School of Budapest (ICSB), which is a mission school in Hungary. He is working with middle school and high school students. As a missionary at ICSB Bruce has the opportunity to serve the community in different ways. His principal ministry is two-fold: First - he is serving many of the missionary families in Hungary by providing an education for their children. This allows those missionaries to continue their own mission work without having to worry about the education of their family. Second - ICSB is a mission field itself where Bruce has the opportunity to advance the Kingdom of God by discipling the students in his classes. The war in Ukraine has had a direct effect on the ICSB community. Many refugees from Ukraine and missionary families from Ukraine and Russia are currently living in the Budapest area. The ICSB community has provided a welcoming and safe place for these families to live and go to school. This has given Bruce and the ICSB community the opportunity to minister to these families and to help support the missionaries who are still serving in Ukraine. One of our sister schools, the Kyiv Christian Academy, has some employees and school families who are still in Kyiv hoping to get the school functioning again for next year.

Greg and Sandy Baker - Intervarsity - UD
Greg and Sandy Baker work with InterVarsity Christian Fellowship (IVCF) at the University of Delaware (UD) where we seek to help students grow in their love for God, His word and people of every ethnicity and culture. Greg works with the undergraduate and graduate chapters and disciples students, trains small group leaders and coaches students in sharing their faith.
IVCF at UD also has Asian American and Athlete chapters. Sandy has maintained relationships with several campus colleagues and students and meets with some International students.
IVCF at UD also has Asian American and Athlete chapters. Sandy has maintained relationships with several campus colleagues and students and meets with some International students.

Donnie and Kara
Donnie and Kara have worked alongside the Presbyterian Church of Senegal (l’Église Presbytérienne du Sénégal or EPS) since 2014. Senegal is a majority (95%) Muslim country in the broader, largely Francophone region of West Africa. It’s overall political stability and religious tolerance allows it to be a strategic place for the church to grow and send missionaries out to surrounding areas.
Their more recent focus has been mentoring two newly ordained pastors and their wives in the planting of a church in a predominantly unreached area. Donnie also serves as the MTW team leader in Senegal and assists with the training and support of rural pastors and leaders. Kara teaches EFL classes both through the local church plant and to professionals at a nearby engineering ministry. Together with their teammates, they host and facilitate church groups and volunteers in support of the local church’s ministry.
Before moving to West Africa, Donnie was an associate pastor at Trinity PCA in Asheville, North Carolina, their home base. Prior to that, they started Reformed University Fellowship at the Savannah College of Art and Design. Donnie and Kara have three young adult children who, with their families, reside in North Carolina.
Their more recent focus has been mentoring two newly ordained pastors and their wives in the planting of a church in a predominantly unreached area. Donnie also serves as the MTW team leader in Senegal and assists with the training and support of rural pastors and leaders. Kara teaches EFL classes both through the local church plant and to professionals at a nearby engineering ministry. Together with their teammates, they host and facilitate church groups and volunteers in support of the local church’s ministry.
Before moving to West Africa, Donnie was an associate pastor at Trinity PCA in Asheville, North Carolina, their home base. Prior to that, they started Reformed University Fellowship at the Savannah College of Art and Design. Donnie and Kara have three young adult children who, with their families, reside in North Carolina.

Graham & Emily Guo
The college years were when the Lord made Himself known to Graham and Emily in life-changing ways. Graham, in his home country in East Asia, learned the gospel for the first time and grew a desire to serve the Lord in pastoral ministry. Emily, in her home country in North America, grew deeper roots of faith and a heart for the nations. The Lord brought them together through ministry and for a life of ministry no matter where He leads them.
Graham's ministry area in East Asia, attracts students from many unreached nations, with a drive from the leaders to bring in more international scholars over the next decade. Through the local international church, the Guos’ mission is to reach and equip students with the gospel of His kingdom advancing throughout the world.
Please pray that the Lord would use Graham’s ministry training and experience, language skills, and Graham and Emily’s heart for college students to bring glory to His great name. Pray that their children would learn to love the Lord and love their neighbors.
Graham's ministry area in East Asia, attracts students from many unreached nations, with a drive from the leaders to bring in more international scholars over the next decade. Through the local international church, the Guos’ mission is to reach and equip students with the gospel of His kingdom advancing throughout the world.
Please pray that the Lord would use Graham’s ministry training and experience, language skills, and Graham and Emily’s heart for college students to bring glory to His great name. Pray that their children would learn to love the Lord and love their neighbors.

Chris & Robin Thomas – Thomas Charities
Chris and Robin Thomas call Cornerstone their church home and live in Landenberg, PA. In 2010 during a mission trip to Uganda, Robin found a significant and unmet need for the women and orphans of Northern Uganda. It was during this trip that Robin witnessed young starving orphans eating the pages of a book during a mission revival meeting; it was in this moment that God placed the people of this area in Robin’s heart to help, and Thomas Charities was conceived. Thomas Charities is a Gospel-Centered, Community-Focused Ministry operating in northern Uganda ministering to predominately widows and orphans living in extreme poverty in an area that has been ravaged by rebel wars and decimated by AIDS. Through the preaching of the Word, the women have been transformed both spiritually and physically. Their communities have become self-sufficient through our facilitation of food security through community farming projects, improved health through clean drinking water wells and medical support, and improved future through education. All this is done with a gospel foundation with the focus on sustainability, not dependency. The ministry and fellowship among the believers here in northern Uganda are thriving! The genuine faith and prayers of these immensely financially poor villagers who may only have two pieces of clothing just put me, to shame and tears. The what I call “natural church” gatherings of believers, whether under a tree or in an empty village school classroom, for Sunday morning prayers are Spirit-filled, sincere, and sweet. Please keep our staff, Akena Patrick, Okello Charles, Pastor Philip Manang, and Simon Peter, in your prayers as they have so faithfully and selflessly ministered to their people and are very obviously loved throughout the extended communities. No matter where you go, whether out here in the bush or at the various trading centers or even in town, you will always hear people calling out their greetings to them as we drive by.

Pace Holdbrooks - Campus Minister - RUF UD
The Holdbrooks’ are so excited to be serving with RUF at the University of Delaware! Pace and Laura met in college at the University of North Alabama in Florence, AL. As a young Christian, Pace found community and purpose through an excellent campus ministry and the love of the local church. Laura came to faith at a young age, was active in a few different ministries in college, and met Pace at the local PCA church. After getting married, they left Alabama to study at Covenant Theological Seminary in St. Louis, MO. After 3 incredible years in the Midwest, Pace earned his M.Div and took a job at a church in Laura’s home town. From 2019 to May 2024, Pace served as an Assistant Pastor (pastoring teens, college students, and children), while Laura became a school counselor after earning her Master’s at the University of Alabama. Pace and Laura love college students and are excited to be a part of the work God is doing at UD!

Charles & Irene T.
By 2050, Africa is expected to be the center of Christianity, as more than 40% of the world’s Christians will reside in Sub-Saharan Africa. However, the African church, plagued by syncretism and prosperity gospel, needs a gospel-centered reformation.
MTW’s West Africa team is addressing the reform needs of West African Christianity by revitalizing and planting churches and especially training pastors in the Reformed tradition through the Timothy House model, a two-year residential church planter training center by MTW’s West African Reformed Mission.
As Americans and natives of Ivory Coast and Cameroon respectively, Charles and Irene are excited to join the team as a bridge between them and their African partners, and help fulfill WARM’s vision of replicating the impactful Timothy House model across West Africa. Thus, after training in Senegal, Charles and Irene will relocate to Sierra Leone to explore creating a Timothy House there to spur the growth of its young Presbyterian Church in the Reformed covenantal tradition.
Charles completed an M.Div. at Westminster Theological Seminary, Pennsylvania. Irene is a registered nurse with a master’s in nursing education. She will help with women’s ministry, health promotion, and disease prevention education, among other responsibilities.
MTW’s West Africa team is addressing the reform needs of West African Christianity by revitalizing and planting churches and especially training pastors in the Reformed tradition through the Timothy House model, a two-year residential church planter training center by MTW’s West African Reformed Mission.
As Americans and natives of Ivory Coast and Cameroon respectively, Charles and Irene are excited to join the team as a bridge between them and their African partners, and help fulfill WARM’s vision of replicating the impactful Timothy House model across West Africa. Thus, after training in Senegal, Charles and Irene will relocate to Sierra Leone to explore creating a Timothy House there to spur the growth of its young Presbyterian Church in the Reformed covenantal tradition.
Charles completed an M.Div. at Westminster Theological Seminary, Pennsylvania. Irene is a registered nurse with a master’s in nursing education. She will help with women’s ministry, health promotion, and disease prevention education, among other responsibilities.

Bob & Keren Heppe
1994, Bob became involved with
Serge as a young adult after coming to faith in
Jesus through the ministry of founder Jack Miller.
His family moved to London to bear witness to the
love and grace of Jesus among South Asians
(primarily Hindu, Muslim, and Sikh backgrounds).
The ministry now involves evangelism and church
planting in several areas of the UK, and supervision
of teams working directly in India.
By 1995, The New Life Masih Ghar (NLMG) Church was planted. The worship and activities reflect the culture of the area. Serge partners with the church in Sunday worship gatherings, Bible studies, youth club, kids club, young adults out-reach, and a “mums and tots” group. In all ministries, the team is committed to equipping local believers to continue serving for years to come.
Keren co-leads Serge’s U.K. and South Asian Ministries with her husband Bob and spends much of her time heading the ASHA Charity shops. ASHA is an arm of the U.K. work that was established to raise funds for the relief of poverty, oppression, and injustice as well as for the promotion of health, education and economic opportunity in the developing world. These “second hand thrift” shops are an evangelistic presence in the community providing employment and money for mission work with a special emphasis on South Asia.
By 1995, The New Life Masih Ghar (NLMG) Church was planted. The worship and activities reflect the culture of the area. Serge partners with the church in Sunday worship gatherings, Bible studies, youth club, kids club, young adults out-reach, and a “mums and tots” group. In all ministries, the team is committed to equipping local believers to continue serving for years to come.
Keren co-leads Serge’s U.K. and South Asian Ministries with her husband Bob and spends much of her time heading the ASHA Charity shops. ASHA is an arm of the U.K. work that was established to raise funds for the relief of poverty, oppression, and injustice as well as for the promotion of health, education and economic opportunity in the developing world. These “second hand thrift” shops are an evangelistic presence in the community providing employment and money for mission work with a special emphasis on South Asia.
