After studying Bible at Emmaus Bible College (Chicago, USA) Karl studied geology, physics and computer science at the University of Colorado (Boulder). He received his Master of Divinity from Westminster Theological Seminary (Philadelphia) and is currently pursuing the Doctor of Ministry in Urban Missions from Westminster.
Karl served on pastoral staff of a Christian Brethren church in Philadelphia before moving to Mozambique in 1995. The Petersons served an indigenous denomination in Mozambique until 2011 – church planting and directing the Centre for Theological Education in Maputo. Karl served as Mozambique Coordinator for Editora Fiel (Brazil) and Regional Director for the Emmaus Correspondence School in Mozambique. Karl has been a local organizer for the African Pastors Conference ministry in Mpumalanga and Swaziland, a conference and literature ministry which seeks to equip undertrained pastors in southern African townships.
In 2003 the Petersons moved to Barberton, Mpumalanga from where they carried out their work in Mozambique and pastored the Barberton Community Baptist Church. Karl began teaching at the Bible Institute of South Africa in Kalk Bay in 2012. His wife, Glynn, worked as paediatric surgical nurse at the Children’s Hospital in Seattle (USA) and has mission experience in Ecuador, South America.
Karl and Glynn have six children and serve under Christian Missions in Many Lands (USA).