This Melchizedek was king of Salem and priest of God Most High. He met Abraham returning from the defeat of the kings and blessed him,
References for Hebrews 7:1
and Abraham gave him a tenth of everything. First, the name Melchizedek means “king of righteousness”; then also, “king of Salem” means “king of peace.”
Without father or mother, without genealogy, without beginning of days or end of life, resembling the Son of God, he remains a priest forever.
References for Hebrews 7:3