Hebrews 7:20

17 For it has been witnessed of him, You are a priest for ever after the order of Melchizedek.

18 So the law which went before is put on one side, because it was feeble and without profit.

19 (Because the law made nothing complete), and in its place there is a better hope, through which we come near to God.

20 And as this is not without the taking of an oath

21 (For those were made priests without an oath, but this one was made a priest with an oath by him who says of him, The Lord gave his oath, which he will not take back, that you are a priest for ever);

22 By so much is it a better agreement which we have through Jesus.

23 And it is true that there have been a great number of those priests, because death does not let them go on for ever;