Since 2009, the Old Testament scholar John Walton has produced a series of short books for laypeople which assert the existence of a “lost world” behind key parts of the Old Testament, including "The Lost World of Genesis One", "The Lost World of Scripture" (co-authored with D. Brent Sandy), "The Lost World of Adam and Eve", "The Lost World of the Israelite Conquest" (co-authored with J. Harvey Walton), "The Lost World of the Flood" (co-authored with Tremper Longman III), "The Lost World of Torah" (co-authored with J.