More on the Experiencial Basis of the Trinity:
Paul in one letter speaks of his and the disciple's experience of God:
"But when it pleased God, who set me apart from my mother's womb and called me through his grace, to reveal His Son in me ..." (Gal. 1:15,16a) .
Paul was an opposer to the Christian church. There is probably no one here whose zeal to oppose and debunk the Christian message more than this man. He now says that he realizes that from birth, God chose to reveal His Son in him.
This is interestingly put. He does not talk merely about learning about Christ or agreeing with Christ in some objective philosophical sense. Rather, God intended that Jesus Christ would be revealed in Paul. Paul was to be transformed by having the Christ who can enter into man, reveal Himself in Paul's personality.
This is the Son of the Trinity being dispensed into Paul. He writes latter " ... it is no longer I who live, but it is Christ who lives in me ..." (Gal. 2:20)
The "me" is still there. But the "me" has Jesus Christ compounded into his being. He lives in oneness with the Christ in him. He lives as another unusual divine Person has been "grafted" into his ego. "And the life which I now live in the flesh I live in faith, the faith of the Son of God who loved me and gave Himself up for me."
Paul is only a representative of the normal Christian life. And he writes that the Father has poured out the Spirit of His Son into the hearts of the believers, his audience, (the Christians of the churches in Galatia):
"And because you are sons, God has sent forth the Spirit of His Son into our hearts, crying Abba Father!" (4:6)
The Son is in their experience. The Holy Spirit as the Spirit of His Son is in their experience. And the Father Who pours forth the Spirit of the Son into their hearts is in their experience. For it is because of the Spirit of the Son that they realize a most intimate union and relationship in life with the Father. He is now their "Daddy". He is now there most intimate "Abba", their "Papa" God.
"And because you are sons, God has sent forth the Spirit of His Son into our hearts, crying, Abba Father!" (4:6)
The Father, sending forth the Holy Spirit, causes the Son to be revealed in them as well as in Paul the apostle. And through this indwelling Son of God they realize God the most intimate "Abba". God, our own "Daddy".
This is the experiencial basis of the Father - Son - Holy Spirit God as One dispensed and imparted into man.
Then of course the Holy Spirit is the realm for the believers to walk in, step by step, in their daily lives to manifest the fruits of the Spirit:
"But I say, Walk by the Spirit and you shall by no means fulfill the lust of the flesh." (5:16)
Jesus Christ totally overcame sin. And now the indwelling Son of God is Spirit within them. If they learn to "walk by the Spirit" they, in turn, will by no means be defeated by the lust of the flesh. Living in oneness with this indwelling Christ is the key to victory over sinning.
"If we live by the Spirit, let us also walk by the Spirit" (Gal. 5:25)
Those of us who have experience with the Holy Spirit know that Paul knows what he is talking about. It is 2,000 years latter and the Holy Spirit, the living Son of God, and Abba Father are available to man even today.
This is part of the experiencial basis of the Trinity.