Hebrews 7:3-5

American Standard Version

³ without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like unto the Son of God), abideth a priest continually.

⁴ Now consider how great this man was, unto whom Abraham, the patriarch, gave a tenth out of the chief spoils. ⁵ And they indeed of the sons of Levi that receive the priest’s office have commandment to take tithes of the people according to the law, that is, of their brethren, though these have come out of the loins of Abraham: