John 14:20
On that day you will know that I am in my Father, and you in me, and I in you — the eschatological "that day" (referring to the post-resurrection appearances and ultimately to the full revelation at the end) brings complete mutual indwelling: Jesus is in the Father, the disciples are in Jesus, and Jesus is in the disciples. This is the consummation of union; the isolation created by death is overcome through a communion that encompasses all relationships—the disciples with Jesus, Jesus with the Father. This is the goal of salvation: not escape from the world but transformation into divine communion.