Genesis 14:18 - 20 - Melchizedek king of Salem brought out bread and wine: and he was priest of God Most High. He blessed him, and said, "Blessed be Abram of God Most High, possessor of heaven and earth: and blessed be God Most High, who has delivered your enemies into your hand." Abram gave him a tenth of all.
Psalms 110:4 - Yahweh has sworn, and will not change his mind: "You are a priest forever in the order of Melchizedek."
Hebrews 5:10 - named by God a high priest after the order of Melchizedek.
Hebrews 7:15 - This is yet more abundantly evident, if after the likeness of Melchizedek there arises another priest,
Hebrews 7:8 - Here people who die receive tithes, but there one receives tithes of whom it is testified that he lives.