Genesis 14:17-21

After Abram returned from his victory over Kedorlaomer and all his allies, the king of Sodom went out to meet him in the valley of Shaveh (that is, the King’s Valley). And Melchizedek, the king of Salem and a priest of God Most High, brought Abram some bread and wine. Melchizedek blessed Abram with this blessing: “Blessed be Abram by God Most High, Creator of heaven and earth. And blessed be God Most High, who has defeated your enemies for you.” Then Abram gave Melchizedek a tenth of all the goods he had recovered. The king of Sodom said to Abram, “Give back my people who were captured. But you may keep for yourself all the goods you have recovered.”