Hebrews 7:3, 15, 17, 21

No one knows who Melchizedek’s father or mother was, where he came from, when he was born, or when he died. Melchizedek is like the Son of God; he continues being a priest forever.

And this becomes even more clear when we see that another priest comes who is like Melchizedek.

It is said about him, “You are a priest forever, a priest like Melchizedek.”

but Christ became a priest with God’s oath. God said: “The Lord has made a promise and will not change his mind. ‘You are a priest forever.’ ”