Hebrews 7:1-2

Melchizedek’s name means “king of righteousness.” He was the King of Peace, because the name of the city he ruled as king was Salem, which means “peace.” And he was also a priest of the Most High God. Now when Abraham was returning from defeating many kings in battle, Melchizedek went out to meet him and blessed him. Then Abraham took a tenth of everything he had won in battle and gave it to Melchizedek.