William F. Hill pioneered the Calvary Evangelistic Center in Independence, Iowa and has pastored there for over 39 years.  Eight years later he founded the Independence Christian Academy, grades K-12.  He has also written twenty other books and over twenty religious pamphlets, which are featured at holinessliterature.com.

In addition to preaching at campmeetings, conducting seminars and revival meetings in the USA, God has moved on Hill to expand the ministry of their local church into all the world through literature and many overseas trips where he has conducted city-wide crusades and seminars.

He has received his Th.B., Th.M., and Doctor of Theology degrees from International Seminary, Plymouth, Florida.