From a homily on Joshua by Origen, priest

Once Jericho was surrounded it had to be stormed. How then was Jericho stormed? No sword was drawn against it, no battering ram was aimed at it, no javelins were hurled. The priests merely sounded their trumpets, and the walls of Jericho collapsed. In the Scriptures Jericho is often represented as an image of the world…..