Global Missions

We support many different individuals and organizations here and abroad. For a complete list of our missionaries, see our Missions Table in the Gathering Hall.

Anthony and Sara Sytsma

Resonate Global Mission, Uganda

Anthony works as Leadership Developer and Sara as Cultivator of Community Transformation on the Resonate Global Mission team in Eastern and Southern Africa.  Anthony’s work focuses on training pastors and church leaders (including Timothy Leadership Training and Helping Without Hurting in Africa) and Sara works with communities integrating faith and life skills (agriculture, nutrition, baking, etc.) with many churches and church leaders in addition to local partnerships and ministry opportunities.

You can follow their blog at, and sign up for their latest prayer updates. View Anthony & Sara’s latest newsletter here.

David Tyokighir

World Renew Program Consultant, Nigeria

David Tyokighir (tCho-key) has been the World Renew Country Consultant in Nigeria since 1991 and has developed a strong passion for empowering communities and organizations to bring about transformational development and wholeness.   David communicates with River Terrace through visits and correspondence to update us on our partnership with the Universal Reformed Christian Church (URCC) and Beacon of Hope Initiative in Benue State, Nigeria, as well as World Renew.  Beacon of Hope Initiative is a Nigerian organization that works toward a holistic response to HIV and AIDS ministry among churches and communities in Benue State, Nigeria.

We are not able to put newsletters on the website for security reasons. Copies are available on the Missions table in the gathering hall.


Raul & Adrianna Herrera

Resonate Global Mission, Nicaragua

Adrianna has been working with the Nehemiah Center’s Church Friendship Program for four years, connecting Nicaraguan and North American churches with each other through prayer, communication, mutual learning, fellowship, and teamwork.  Some of Adrianna’s activities involve collaborating with other international groups, teaching classes for students on the Dordt College internship program, helping coordinate volunteers at the Nehemiah Center, and serving in the Church Strengthening Dept. and leadership committees.

 View Raul & Adrianna’s latest newsletter here. View Adrianna’s blog at

Ovey Embu

Beacon of Hope Initiative, Nigeria

Beacon of Hope Initiative in Nigeria continues to be very thankful for our past support of the Nigeria Partnership, having given $10,000 each year since 2009.  Ovey Embu is the director who works together with David Tyokighir.  Ovey is in charge of the overall operation/ implementation of BHI programs, leading staff in planning and implementation of BHI strategies, and networking with other organizations both on HIV/ AIDS and other programs that promote holistic transformational development. The funds we give to the Nigeria Partnership provide HIV/ AIDS prevention materials and education, group micro-loans to help families provide for their families, HIV test kits, and trauma healing, all of which have produced many positive results. The partnership also provides school funds for orphans and vulnerable children.  Our walk-out program, Greenhouse, collects an offering each service toward this and recently sponsored a 9th student.  Please pray for this important work.

View Ovey’s August 2020 update here.



Adam Umbarger

Lawrence University Christian Fellowship — Appleton, WI
Bellin College InterVarsity — Green Bay, WI

Adam works with InterVarsity Christian Fellowship (IVCF) at the University of Wisconsin, Green Bay. IVCF serves students and faculty on college and university campuses nationwide.  Their vision is to see students and faculty transformed, campuses renewed, and world changers developed. Adam’s main roles with IVCF include training student leaders, fostering community and discipleship among students, and leading sessions about faith and Christianity at conferences. 

View Adam’s latest newsletter here.


Carla Bieber

InterVarsity Graduate Fellowship

Carla Bieber is a part-time international specialist with graduate students and visiting scholars through InterVarsity at MSU.  In addition, Carla provides opportunities for these students and scholars to interact with River Terrace Church through English conversation classes, international Bible studies, monthly potlucks, conversation partners and host families, and various special parties.

View Carla’s latest newsletter here.