Hebrews 7:17

for the testimony is of this manner, Thou art a priest for ever after the order of Melchisedec.

Psalm 110:4

The LORD has sworn and will not repent, Thou art a priest for ever after the order of Melchizedek.

Hebrews 5:6

As he said also in another place, Thou art a priest for ever after the order of Melchisedec.

Hebrews 7:21

(for the others indeed without an oath were made priests, but this one with an oath by him that said unto him, The Lord swore and will not repent, Thou art a priest for ever after the order of Melchisedec);

Hebrews 6:20

where our precursor, Jesus, has entered for us and is made high priest for ever after the order of Melchisedec.

Hebrews 5:10

named by God high priest after the order of Melchisedec.

Hebrews 7:15

And it is yet far more manifest: if there arises another priest who is like unto Melchisedec,

Treasury of Scripture Knowledge

Summary

For he testifieth, Thou art a priest for ever after the order of Melchisedec.

Bible References

General references

Hebrews 7:15
And it is yet far more manifest: if there arises another priest who is like unto Melchisedec,
Hebrews 5:6
As he said also in another place, Thou art a priest for ever after the order of Melchisedec.
Hebrews 6:20
where our precursor, Jesus, has entered for us and is made high priest for ever after the order of Melchisedec.
Psalm 110:4
The LORD has sworn and will not repent, Thou art a priest for ever after the order of Melchizedek.