In that day of glorious re-communion with you, begun in the Resurrection-surprises, which will aid your faith and triumphantly establish the mysteries and marvels of Pentecost, you shall know what you now most imperfectly apprehend by faith, that I am in my Father, as One lifted up into God, and that I act entirely with and for and as my Father, fulfilling all that I have told you of my personal relationship with him; and then, he adds, you shall know that as I am in my Father, you (are) in me, living in and by my power, and continuously drawing life from me; and what is still more, I in you; i.
e. as the Father has acted in and through my will, and I have spoken his words and done his works, so I will energize in you. Your "greater works" will prove my "greater power." Your own consciousness of my presence, and of continuous communion with me, will reveal to you, as you never knew before, that I am in my Father, and also that I am in you.
So the apparent paradox presents itself, that in order to know the Father, to see the Father, we must commune with the humanity of Jesus; but in order to realize and come into contact with that humanity, we have to grasp that it is lifted up into God.
Because he is in the Father he is able to be with and in us.