Phone: +27 11 794 8001

Karl and Jenny Teichert

The Teichert family live in Johannesburg, South Africa, and have served with OC Africa since 1997. Karl serves as the OC Africa - Southern Regional Director, Africa Area Director, and has extensive experience in training and coaching Christian leaders. Jenny has a passion to equip Children’s ministry workers and assisting HIV/AIDs community care workers.

Jay and Sarah Gerhart

Jay and Sarah Gerhart are based in Zimbabwe, where Sarah is the field director. They have served with One Challenge in southern Africa (OC Africa) for over 20 years. Their passion is in discipling nations through transformed lives and discipling nationals to grow as godly, kingdom-oriented leaders.

Paul and Barbara Siaki

Paul and Barbara Siaki are second-generation missionaries. When they graduated from university in California, they were part of a little church plant in their area, where Paul was ordained.

Christopher and Leigh Harrison

Christopher and Leigh Harrison have experienced God’s deep love and call on their lives. Christopher was born in KwaZulu-Natal, South Africa, and Leigh was born and raised in Marondera, Zimbabwe. They have grown in grace and love through over 35 years of marriage and have two adult daughters, Shervon and Alyssa.

Gabriel and Gloria Francis

Gabriel Francis has been in Christian ministry for 29 years. Gabriel and his wife Gloria joined the OC team in 2018 after over 20 years of church pastoring in Namibia and South Africa. They are based in Johannesburg, South Africa.

Noel and Jean Livesey

Noel and Jean Livesey has been involved in Christian Ministry for 44 years. They served as church planters in the Philippines for 25 years. Noel and Jean first joined OC Africa in 2014 and are grateful they now get to serve in the country of their birth.

Dinah and Bodo Ratsimbajaona

Dinah and Bodo Ratsimbajaona have been in ministry for 23 years and OC Africa Associates for 10 years. Dinah is the Director of Island Mission with the vision of multiply disciples of Jesus in the Indian Islands.

Barbosa de Oliveira Jr and Sinara Barbosa

Barbosa is committed to Leadership Training and Development with a focus on church multiplication and mission for the five Portuguese-speaking countries of Africa.

Thomas and Nester Maphophe

Thomas has been in ministry for over 30 years and an OC Africa Associate for more than 20 years. Thomas's vision is to train and mentor leaders to multiply disciple making Christians.


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3 Randridge Office Park
Ateljee Street
Randpark Ridge



Private Bag X04
Suite 114
South Africa



Phone: +27 11 794 8001
Alt Office Tel: +27 84 521 7350