Hebrews 7:24

But on the other hand, Jesus has a permanent priesthood because He lives forever.

Hebrews 7:28

For the law of Moses appoints [morally] weak men to be head priests, but the message of [God's] oath, which came after that law [Note: The quotation from Psa. 110:4 (See verse 21) was written after the law of Moses was given] appointed the Son, who was made perfect [in every way] forever.

John 12:34

Then the crowd replied to Him, "We have heard from [the writings of] the law of Moses that the Christ will live forever; so how can you say, 'The son of man must be lifted up [i.e., to die]?' Who is this son of man?"

Romans 6:9

We know that Christ was raised from the dead, never to die again, because death does not have control over Him any longer.

Hebrews 7:8-25

And in the one case, men here [on earth, that is, the Levites] who die, collect a tenth [from the rest of the Israelites], but there [i.e., in the case of Melchizedek] it is collected by someone about whom it is declared [by Scripture] that he continues to live.

Hebrews 13:8

Jesus Christ is the same yesterday and today and forever.

Revelation 1:18

and the Living One. I was dead, and see, I am [now] alive forever and ever! And I possess the keys of death and of the unseen place of departed spirits.

Treasury of Scripture Knowledge

Summary

But this man, because he continueth ever, hath an unchangeable priesthood.

Bible References

He continueth

Hebrews 7:8
And in the one case, men here [on earth, that is, the Levites] who die, collect a tenth [from the rest of the Israelites], but there [i.e., in the case of Melchizedek] it is collected by someone about whom it is declared [by Scripture] that he continues to live.
Hebrews 13:8
Jesus Christ is the same yesterday and today and forever.
John 12:34
Then the crowd replied to Him, "We have heard from [the writings of] the law of Moses that the Christ will live forever; so how can you say, 'The son of man must be lifted up [i.e., to die]?' Who is this son of man?"
Romans 6:9
We know that Christ was raised from the dead, never to die again, because death does not have control over Him any longer.
Revelation 1:18
and the Living One. I was dead, and see, I am [now] alive forever and ever! And I possess the keys of death and of the unseen place of departed spirits.