Genesis 14:18-20

And Melchizedek, who was both a priest of the Most High God and the king of Salem, brought out to Abram bread and wine. He spoke over him a special blessing, saying, “Blessed is Abram by God Most High, Creator of heaven and earth. And blessed be God Most High, whose power delivered your enemies into your hands!” Abram gave Melchizedek a tenth of all he possessed.