Since 1978, Galen Peterson has served with the American Remnant Mission and today is Executive Director of the ministry. The goal of A.R.M. is to lead Jewish people into a life changing relationship with Jesus the Messiah through evangelism and discipleship, and by training Christians to witness to their Jewish neighbors.

In addition to providing vision and direction for the mission, he leads Brit Hadasha Messianic Fellowship in Walnut Creek, California and leads outreach programs based on the biblical festivals. He has earned a doctorate in missiology at Western Seminary and is the author of two books The Everlasting Tradition and Handbook of Bible Festivals. Galen and his wife Dawn have two sons, Tyler and Corey, and live in Concord, California.