Psalms 136:19

Sihon king of the Amorites,.... A strong and warlike people, and their king a great and mighty one; see Psalms 135:11;

for his mercy [endureth] for ever; since this king would not suffer Israel to go through his borders, but came out and fought against them; and had not the Lord smote him, they must have fallen a prey into his hands, Numbers 21:23.