We have no record of Melchizedek’s family, which is important because the Levitical priesthood required ancestry. He seems to appear from nowhere, as if his life has no beginning or end. The author interprets Genesis 14:17–20 with Psalm 110:4, seeing Melchizedek as symbolizing an eternal priesthood.
He remains a priest forever, unlike a Levite whose priesthood ends at death (Hebrews 7:8, 23).
like the Son of God: Melchizedek was not an Old Testament appearance of Jesus. Instead, his priesthood and the priesthood of Jesus share similar traits, as noted in Psalm 110:4.