The Kingdom Series is a series of six Christian allegorical novels set in mythical Arrethtrae with the flavor of the Middle Ages, and written by Chuck Black of Williston, North Dakota. They cover the span of time from Book of Genesis through the Book of Revelation. The books were published in 2006–2007 by Multnomah Publishing and Perfect Praise Publishing, of which Black is President. The Black family collaborated to write the books, and Black's daughter wrote music to them.