Give the poor guy a break fellers, he’s only following the example of his loving god:
"the Lord our God delivered him over to us and we struck him down, together with his sons and his whole army. At that time we took all his towns and completely destroyed them - men, women and children. We left no survivors." (Deut 2:33-34).
"So the Lord our God also gave into our hands Og king of Bashan and all his army. We struck them down, leaving no survivors. At that time we took all his cities ... We completely destroyed them … destroying every city - men, women and children." (Deut 3:3-6).
“You must destroy all the peoples the Lord your God gives over to you. Do not look on them with pity” (Deut 7:16).