Cross reference
Hebrews 7:17
17 For it has been witnessed of him, You are a priest for ever after the order of Melchizedek.
Psalms 110:4
4 The Lord has made an oath, and will not take it back. You are a priest for ever, after the order of Melchizedek.
Hebrews 5:6
6 As he says in another place, You are a priest for ever after the order of Melchizedek.
Hebrews 6:20
20 Where Jesus has gone before us, as a high priest for ever after the order of Melchizedek.
Hebrews 7:21
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);
Hebrews 5:10
10 Being named by God a high priest of the order of Melchizedek.
Hebrews 7:15
15 And this is even more clear if a second priest has come up who is like Melchizedek,