Hebrews 7:17

For it is attested [by God] of Him,

You (Christ) are a Priest forever
According to the order of Melchizedek.”

Psalm 110:4


The Lord has sworn [an oath] and will not change His mind:
You are a priest forever
According to the order of Melchizedek.”

Hebrews 5:6

just as He also says in another place,

You are a priest [appointed] forever
According to the order of Melchizedek.”

Hebrews 7:21

(for those Levites who formerly became priests [received their office] without [its being confirmed by the taking of] an oath, but this One [was designated] with an oath through the One who said to Him,

The Lord has sworn
And will not change His mind or regret it,
You (Christ) are a Priest forever’”).

Hebrews 6:20

where Jesus has entered [in advance] as a forerunner for us, having become a High Priest forever according to the order of Melchizedek.

Hebrews 5:10

being designated by God as High Priest according to the order of Melchizedek.

Hebrews 7:15

And this becomes even more evident if another priest arises in the likeness of Melchizedek,

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 this becomes even more evident if another priest arises in the likeness of Melchizedek,
Hebrews 5:6
just as He also says in another place,

You are a priest [appointed] forever
According to the order of Melchizedek.”
Hebrews 6:20
where Jesus has entered [in advance] as a forerunner for us, having become a High Priest forever according to the order of Melchizedek.
Psalm 110:4

The Lord has sworn [an oath] and will not change His mind:
You are a priest forever
According to the order of Melchizedek.”