King of the Amorites at Heshbon, and the first king Israel defeats in battle. He refuses passage along the king’s road, musters his army at Jahaz, and loses everything from the Arnon to the Jabbok (Numbers 21:21-25). ⚠ The chapter is careful to record that Sihon had himself taken this land from a previous king of Moab, and quotes an Amorite victory ballad to prove it — a legal point, not a literary one, since it means Moab has no standing claim on the territory Israel now holds. Sihon and Og become a fixed pair in Israel’s memory, recited together for centuries as the standard example of what God did for them.