The Spirit proceeds from the Father through the Son to gather the world in Christ back to the waiting Father. The Son left Heaven as the Son of God and returns to Heaven as the Son of Man, even the God-Man. Having joined Himself by incarnation to all humanity, He now joins our humanity in His resurrected flesh with the Trinity. He does not make us gods, but gives us the closest possible way for union and fellowship with God.
“I do not ask for these only, but also for those who will believe in me through their word, that they may all be one, just as you, Father, are in me, and I in you, that they also may be in us.” John 17:20-21a(ESV)