Genesis 14:18-22

18Melchizedek king of Salem (ancient Jerusalem) brought out bread and wine [for them]; he was the priest of God Most High.

19And Melchizedek blessed Abram and said, “Blessed (joyful, favored) be Abram by God Most High, Creator and Possessor of heaven and earth;

20And blessed, praised, and glorified be God Most High, Who has given your enemies into your hand.” And Abram gave him a tenth of all [the treasure he had taken in battle].

21The king of Sodom said to Abram, “Give me the people and keep the goods (spoils of battle) for yourself.”

22But Abram said to the king of Sodom, “I have raised my hand and sworn an oath to the Lord God Most High, the Creator and Possessor of heaven and earth,