has been given to Me….“
Yes, all authority has been given to Jesus.
Since when does God need authority to be given to Him?
God always had it.
And God - Jesus’ God - gave it to Jesus, His first-born Son.
"He spoke to them and said, “All authority has been given to me in heaven and on earth.” Here He is expanding on the authority that He has constantly revealed throughout His life so that this is a powerful and strong statement. It is declaring that He has been openly proclaimed as King of Kings and Lord of Lords (Rev 19:16), that nothing now remains outside His control (Eph 1:19-23), that He is Lord of Heaven and earth (compare Mat 11:25; and see Act 17:24) and that He has received again the glory which was His before the world was (Joh 17:5). Paul thus tells us that He rose above all the powers of the heavens and that all principalities and powers in heavenly places were made subject to Him (Eph 1:21-23). As regards earth His Kingly Rule, which had been revealed especially in His power over evil spirits (Mat 12:28), has been established and confirmed. The picture is thus of the Son of Man who as Israel’s king has come out of suffering to the throne of God to receive His worldwide and eternal Kingly Rule and glory and dominion (Dan 7:14). The child Who was born and the Son Who was given has had the government put on His shoulders so that He might reign over the whole sphere of His Kingly Rule (Isa 9:6-7). God has highly exalted Him and given Him the Name which is above every Name, that at the name of Jesus every knee should bow, with the result that He has been declared to be ‘Lord’ (YHWH) (Php 2:9-11). Men had refused Him that authority, but God has confirmed it and it is now to be manifested so that all men will be shortly made aware of it (compare Mat 26:64), and never more so than when the wind and fire descended on His disciples in the Temple area (Acts 2). For Kingly Rule belongs to the Lord, and He rules over the nations (Psa 22:28), and YHWH has set His king upon His holy hill (Psa 2:6). Thus the world will never be the same again, for Jesus is King and is at work among men. He Who refused Satan’s offer of all the kingdoms of the world if He would rule them in his way (Mat 4:8) has received something greater than even Satan could have imagined. He is King of both Heaven and earth." Peter Pett Commentary
"The power and authority which he asserts to himself is, All power both in heaven and earth, Act 10:36,42; Eph 1:20-22; power of remission of sins, Luk 24:47, of congregating, teaching, and governing his church; a power to give eternal life to whomsoever he pleased.
This was inherent in him as God blessed for ever, given to him as our Mediator and Redeemer, given him when he came into the world, but more especially confirmed to him and manifested to be given him at his resurrection and ascension, Phi 2:9,10. Having declared his power, he delegates it." Matthew Poole Commentary
The exact phrase "firstborn son" is in reference to the virgin Mary, not Yahweh -
"And
she brought forth her firstborn son; and she wrapped him in swaddling clothes, and laid him in a manger, because there was no room for them in the inn." (Luke 2:7 ERV)
The Son of God, "who is the image of the invisible God, the
firstborn of all creation; for in him were all things created, in the heavens and upon the earth, things visible and things invisible, whether thrones or dominions or principalities or powers;
all things have been created through him, and unto him; and he is before all things, and in him all things consist. And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that
in all things he might have the preeminence." (Col 1:15-18 ERV)
from another translation of this passage
"He is the image of the invisible God;
his is the primacy over all created things. In him everything in heaven and on earth was created, not only things visible but also the invisible orders of thrones, sovereignties, authorities, and powers: the whole universe has been created through him and for him. And he exists before everything, and all things are held together in him. He is, moreover, the head of the body, the church. He is its origin, the first to return from the dead, to be
in all things alone supreme." (Col. 1:15-18 New English Bible)
"In the beginning was the Word, and the Word was with God, and
the Word was God. The same was in the beginning with God. All things were made by him; and
without him was not anything made that hath been made." (John 1:1-3 ERV)