Hebrews 7:21-23 English Standard Version (ESV)

21. but this one was made a priest with an oath by the one who said to him: “The Lord has swornand will not change his mind,‘You are a priest forever.’”

22. This makes Jesus the guarantor of a better covenant.

23. The former priests were many in number, because they were prevented by death from continuing in office,

Hebrews 7