Hebrews 5:6

just as He also says in another place,

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

Hebrews 7:17

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.”

(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 5:10

being designated by God as High Priest 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.

Genesis 14:18-19

Melchizedek king of Salem (ancient Jerusalem) brought out bread and wine [for them]; he was the priest of God Most High.

Hebrews 7:3

Without [any record of] father or mother, nor ancestral line, without [any record of] beginning of days (birth) nor ending of life (death), but having been made like the Son of God, he remains a priest without interruption and without successor.

Hebrews 7:15

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

Treasury of Scripture Knowledge

Summary

Hebrews 5:6

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

Thou

Melchisedec

Genesis 14:18

General references

Hebrews 5:10

Hebrews 7:17

Bible References

Thou

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

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

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

Melchisedec

Melchizedek king of Salem (ancient Jerusalem) brought out bread and wine [for them]; he was the priest of God Most High.

General references

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

For it is attested [by God] of Him,

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