The entire second Psalm is both prophetic and linear in that it progresses from one stage to another in a sequential series of steps in relation to its fulfillment.
Psalm 2 verses 1 thru 3
Why do the heathen rage, and the people imagine a vain thing?
The kings of the earth set themselves, and the rulers take counsel together, against the LORD, and against his anointed, saying,
Let us break their bands asunder, and cast away their cords from us.
This first prophecy was fulfilled at a specific point in time and the Bible tells us exactly when that was:
Acts chapter 4 verses 23 thru 28
And being let go, they went to their own company, and reported all that the chief priests and elders had said unto them.
And when they heard that, they lifted up their voice to God with one accord, and said, Lord, thou art God, which hast made heaven, and earth, and the sea, and all that in them is:
Who by the mouth of thy servant David hast said, Why did the heathen rage, and the people imagine vain things?
The kings of the earth stood up, and the rulers were gathered together against the Lord, and against his Christ.
For of a truth against thy holy child Jesus, whom thou hast anointed, both Herod, and Pontius Pilate, with the Gentiles, and the people of Israel, were gathered together,
For to do whatsoever thy hand and thy counsel determined before to be done.
When David penned the second Psalm under Divine inspiration, he foresaw, by the Spirit, the specific time in history when Herod, Pilate, the Gentiles and the people of Israel would gather together against both the LORD, God the Father, and His anointed or His Christ, Jesus Christ, to bring to pass the fulfillment of what he had prophesied or to bring to pass the fulfillment of that which God's hand and counsel had before determined to be done and this was fulfilled in direct relation to Christ's crucifixion as we just finished reading. This prophetic, linear Psalm continues:
Psalm 2 verses 4 thru 6
He that sitteth in the heavens shall laugh: the Lord shall have them in derision.
Then shall he speak unto them in his wrath, and vex them in his sore displeasure.
Yet have I set my king upon my holy hill of Zion.
David, still under Divine inspiration, now begins to prophetically describe God's response to the ragings, vain imaginings and counsels of those who have plotted together against both Him and His Christ in relation to Christ's crucifixion. God derisively laughs at such vain imaginings and speaks unto the participants in His wrath and sore displeasure which is more fully explained later on in this Psalm and tells them, Yet have I set my king upon my holy hill of Zion. In other words, God tells them that although they have banded together and crucified Christ, Christ will yet be God's appointed King upon His holy hill of Zion. How can this be? How can the crucified Christ yet be God's appointed King Who will rule upon His holy hill of Zion? Well, the answer is given unto us in the very next verse:
Psalm 2 verse 7
I will declare the decree: the LORD hath said unto me, Thou art my Son; this day have I begotten thee.
Here, we are all privileged to listen in on a conversation between both Jesus Christ and God the Father. Yes, Jesus is the I Who is declaring the decree which the LORD, God the Father, has said unto me or Him. What then is the decree? It is this:
Thou art my Son; this day have I begotten thee.
In other words, the crucified Christ is yet going to be God's appointed King upon His holy hill of Zion because God prophetically declared that Jesus Christ would be begotten or raised from the dead in a linear sequence of events after Herod, Pilate, the Gentiles and the people of Israel had plotted together in vain in relation to His crucifixion. The Apostle Paul told us exactly at what point in time this precise prophecy and promise was fulfilled:
Acts chapter 13 verses 26 thru 37
Men and brethren, children of the stock of Abraham, and whosoever among you feareth God, to you is the word of this salvation sent.
For they that dwell at Jerusalem, and their rulers, because they knew him not, nor yet the voices of the prophets which are read every sabbath day, they have fulfilled them in condemning him.
And though they found no cause of death in him, yet desired they Pilate that he should be slain.
And when they had fulfilled all that was written of him, they took him down from the tree, and laid him in a sepulchre.
But God raised him from the dead:
And he was seen many days of them which came up with him from Galilee to Jerusalem, who are his witnesses unto the people.
And we declare unto you glad tidings, how that the promise which was made unto the fathers,
God hath fulfilled the same unto us their children, in that he hath raised up Jesus again; as it is also written in the second psalm, Thou art my Son, this day have I begotten thee.
And as concerning that he raised him up from the dead, now no more to return to corruption, he said on this wise, I will give you the sure mercies of David.
Wherefore he saith also in another psalm, Thou shalt not suffer thine Holy One to see corruption.
For David, after he had served his own generation by the will of God, fell on sleep, and was laid unto his fathers, and saw corruption:
But he, whom God raised again, saw no corruption.
In his discourse, the Apostle Paul began by explaining how that they which dwell at Jerusalem and their rulers or how that the Gentiles and the children of Israel whom we read about earlier fulfilled what had been written of Christ in relation to His crucifixion when they desired of Pilate that He should be slain. This didn't fulfil all that had been written in relation to Christ however and Paul continued on to explain how that the promise which God had made unto the fathers in relation to Christ's resurrection from the dead was fulfilled in a linear sequence of events, even as Paul described himself in what we just read, on the literal day when Christ was begotten or on the literal day when Christ was raised from the dead when God did not allow His Holy One to see corruption.
The prophetic, linear second Psalm continues:
Psalm 2 verse 8
Ask of me, and I shall give thee the heathen for thine inheritance, and the uttermost parts of the earth for thy possession.
We're still priviliged here to be listening in on a conversation between God the Father and Jesus His Son in which the Father tells Jesus to ask of Him and He shall give Jesus the heathen or the nations for His inheritance and the uttermost parts of the earth for His possession. When did Jesus come to the place in linear, sequential history or time where He could rightly be told of such an inheritance? Again, the scriptures provide for us the answer to this question:
Hebrews chapter 1 verses 1 thru 5
God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets,
Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;
Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;
Being made so much better than the angels, as he hath by inheritance obtained a more excellent name than they.
For unto which of the angels said he at any time, Thou art my Son, this day have I begotten thee? And again, I will be to him a Father, and he shall be to me a Son?
Jesus was appointed heir of all things by the Father at a specific point in time in linear history and we just read at what point in time that was. It was when Jesus by inheritance obtained a more excellent name than the angels and that, again, was on the literal day in linear history when God the Father said unto Jesus, Thou art my Son, this day have I begotten thee or on the day when Jesus Christ was raised from the dead. Again, here is when Christ obtained a more excellent name than the angels:
Philippians chapter 2 verses 5 thru 11
Let this mind be in you, which was also in Christ Jesus:
Who, being in the form of God, thought it not robbery to be equal with God:
But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
Wherefore God also hath highly exalted him, and given him a name which is above every name:
That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth;
And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.
Jesus, although possibly not always known by that name in eternity past, is God from eternity past. Yes, He has always been in the form of God, but at a specific point and time in linear history, at His Incarnation, specifically, the Word was made flesh and dwelt among us, John chapter 1 verse 14, and this is precisely what Paul was referring to here. When Jesus made himself of no reputation and took upon Himself the form of a servant and was made in the likeness of men, He actually made Himself a little lower than the angels for the suffering of death as is described for us in Hebrews chapter 2 verse 9. In other words, although He was always God from eternity past and although He is actually the Person of the Triune Godhead Who created the angels, at a specific point in time in linear history or at His Incarnation, Jesus humbled Himself and came to this earth and was found in fashion as a man or was found in a condition that was below that of the angels and it wasn't until the time that Jesus was raised from the dead or until the day that He was begotten that He received by inheritance a more excellent name than they with the they being the angels. We need to understand the significance of the following:
I Timothy chapter 2 verses 5 and 6
For there is one God, and one mediator between God and men, the man Christ Jesus;
Who gave himself a ransom for all, to be testified in due time.
Our mediator is THE MAN Christ Jesus.
At a specific time in linear history, there was a change made in relation to the priesthood and that change was made on the day in which Jesus was begotten or on the day in which Christ was raised from the dead:
Hebrews chapter 5 verses 1 thru 6
For every high priest taken from among men is ordained for men in things pertaining to God, that he may offer both gifts and sacrifices for sins:
Who can have compassion on the ignorant, and on them that are out of the way; for that he himself also is compassed with infirmity.
And by reason hereof he ought, as for the people, so also for himself, to offer for sins.
And no man taketh this honour unto himself, but he that is called of God, as was Aaron.
So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.
As he saith also in another place, Thou art a priest for ever after the order of Melchisedec.
Why did the writer of this epistle to the Hebrews link Psalm 2:7, Thou art my Son, to day have I begotten thee, to the time when Christ's everlasting Priesthood began? He did so because, again, our mediator is THE MAN Christ Jesus and although Jesus always existed as God He didn't always exist as a MAN. No, again, the Word was made flesh at a specific point in time in linear history somewhere approximately 2,000 years ago at the time of Christ's Incarnation and He could not have possibly begun His eternal Priesthood as THE MAN Christ Jesus prior to this point in time in linear history. For this precise reason, the writer of this epistle directly linked Psalm 2:7 and its fulfillment to the time when the priesthood changed or to the time when the Levitical priesthood was replaced with the everlasting Priesthood of THE MAN Christ Jesus. Again, it was at this point in time in linear history that THE MAN Christ Jesus obtained by inheritance a more excellent name than the angels:
Ephesians chapter 1 verses 15 thru 23
Wherefore I also, after I heard of your faith in the Lord Jesus, and love unto all the saints,
Cease not to give thanks for you, making mention of you in my prayers;
That the God of our Lord Jesus Christ, the Father of glory, may give unto you the spirit of wisdom and revelation in the knowledge of him:
The eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and what the riches of the glory of his inheritance in the saints,
And what is the exceeding greatness of his power to usward who believe, according to the working of his mighty power,
Which he wrought in Christ, when he raised him from the dead, and set him at his own right hand in the heavenly places,
Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come:
And hath put all things under his feet, and gave him to be the head over all things to the church,
Which is his body, the fulness of him that filleth all in all.
Yes, it wasn't until the the time that God raised Him from the dead that THE MAN Christ Jesus was raised far above all principality and power and might and dominion AND EVERY NAME THAT IS NAMED or until this time that THE MAN Christ Jesus obtained by inheritance a name more excellent than the angels. Peter reiterated the same truth when he wrote:
I Peter chapter 3 verses 21 and 22
The like figure whereunto even baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,) by the resurrection of Jesus Christ:
Who is gone into heaven, and is on the right hand of God; angels and authorities and powers being made subject unto him.
Again, at the time of the resurrection of Jesus Christ or on the day in linear history when THE MAN Christ Jesus was begotten, angels and authorities and powers were made subject unto Him in that He obtained by inheritance a more excellent name than they. Yes, the same are now subject not only to the Word Who has always been God, but instead unto what we commonly call the God-Man and the Man part didn't go into effect until a specific point in time in linear history when THE MAN Christ Jesus became our mediator or when THE MAN Christ Jesus began His Priesthood and that specific point in time in linear history was the day in which Jesus was begotten or at the specific point in time in linear history when Jesus Christ was raised from the dead and this is precisely why Psalm 2:7 was cited by the New Testament writer in relation to the same.