Psalm 110:4

The Priestly King

³
Your people will offer themselves willingly [to participate in Your battle] in the day of Your power;
In the splendor of holiness, from the womb of the dawn,
Your young men are to You as the dew. ⁴ 
The Lord has sworn [an oath] and will not change His mind:
“You are a priest forever
According to the order of Melchizedek.”
⁵
The Lord is at Your right hand,
He will crush kings in the day of His wrath.

Lord Has Sworn

Order of Melchizedek

Priest Forever

Took an Oath

After The Pattern

Jehovah

Melchizedek

Numbers 23:19

“God is not a man, that He should lie,
Nor a son of man, that He should repent.
Has He said, and will He not do it?
Or has He spoken and will He not make it good and fulfill it?

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.”

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’”).

Genesis 14:18

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

Zechariah 6:13

Yes, [you are to build a temple of the Lord, but] it is He who shall build the [ultimate] temple of the Lord, and He shall bear the honor and majesty [as the only begotten of the Father] and sit and rule on His throne. And He shall be a Priest on His throne, and the counsel of peace shall be between the two offices [Priest and King].”’

Hebrews 7:28

For the Law appoints men as high priests who are weak [frail, sinful, dying men], but the word of the oath [of God], which came after [the institution of] the Law, permanently appoints [as priest] a Son who has been made perfect forever.

Psalm 89:34-36

“My covenant I will not violate,
Nor will I alter the utterance of My lips.

Psalm 132:11

The Lord swore to David
A truth from which He will not turn back:
“One of your descendants I will set upon your throne.

Hebrews 6:13-18

For when God made the promise to Abraham, He swore [an oath] by Himself, since He had no one greater by whom to swear,

Hebrews 6:20-3

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

Hebrews 7:11

Now if perfection [a perfect fellowship between God and the worshiper] had been attained through the Levitical priesthood (for under it the people were given the Law) what further need was there for another and different kind of priest to arise, one in the manner of Melchizedek, rather than one appointed to the order of Aaron?

Revelation 1:6

and formed us into a kingdom [as His subjects], priests to His God and Father—to Him be the glory and the power and the majesty and the dominion forever and ever. Amen.