God the Father, together with God the Son and God the Holy Spirit, created mankind to partake of His glory and goodness. In response to the reality of mankind’s finite nature, which was necessarily subject to the possibility of corruption, and with perfect omniscience that mankind would certainly be corrupted, the Trinity purposed the way of salvation by means of the eternal Son of God’s incarnation, obedience, suffering, death, and resurrection, for all of mankind.
The Father sends the eternal Son of God into the world to be born as a male, in order that He might be a second Adam [Gal. 4:4]. He was born under the Law of God that was given to Israel, in order to fulfil the Law of God and to fulfil that corporate expression of the ‘son of God’ and the ‘servant of God’, namely the nation of Israel. [Ex. 4:22; Isa. 41:8 to 53:11]
The Father loves the eternal Son of God as a man and delights in Him [John 3:35; 5:20; 17:26]. At John the Baptist’s baptism of Jesus Christ, the Father publicly manifests Jesus as that Elect One [Isa. 42:1], in contrast to all the sons of Israel seeking repentance for their sins, namely, that Jesus is His only begotten Son, who alone has pleased Him, fulfilling the Law of Israel [Rom. 10:4], and that One that has justly been filled with the Holy Spirit as one according to the flesh.
The Father gives authority to the Son, in His state of humiliation, as a man, to lay down His own life and to take it up again [John 10:18]. The Father gives all judgment to the Son of Man [John 5:22], authority over all flesh [John 17:2], His glory [John 17:22], His life [John 5:26], His Word [John 17:8], and the manifestation of the Father’s name [Isa. 9:6; John 17:6,12,26]. These things are exclusive to the Incarnation, as the eternal Son of God possessed all attributes of divinity according to His own eternal nature.
Upon the cross, the Father, in inexpressible pain and suffering does abandon His dearly beloved Son, as a vicarious and substitutionary atonement for sin. 2 Cor. 5:21 ‘He made Him who knew no sin to be sin on our behalf, so that we might become the righteousness of God in Him.’ Upon His death, the Father immediately received the Son into paradise in both His naturally divine estate and with the spirit of His human nature. Upon His ascension, after His resurrection, the Father received the Son as that perfect Son of Man, whole and complete. The Father, on the day of Pentecost, did fully glorify the Son with the Holy Spirit and has enthroned His Son over all mankind [John 7:39; 12:16; Acts 2:33].