Hebrews 7:5; Hebrews 7:10

Hebrews 7:5

5 Now the law requires the descendants of Levi who become priests to collect a tenth from the people—that is, from their fellow Israelites—even though they also are descended from Abraham.

Hebrews 7:10

10 because when Melchizedek met Abraham, Levi was still in the body of his ancestor.