Wesley P. Walters was a renowned cult expert, lecturing at several evangelical seminaries. He also gave direction to and helped shape the ministry of Personal Freedom Outreach during its infancy. Until his death in 1990 he pastored Marissa Presbyterian Church in Marissa, Illinois.
M. Kurt Goedelman founded Personal Freedom Outreach in 1975. PFO is an apologetics ministry whose purpose is to educate Christians about the dangers of the cults and to warn them of unbiblical teachings within the church itself.