Jesus reveals the One God as Father, Son and Spirit. This unveiling of the three in One is entirely new. There were hints in the Old Testament that we now see in retrospect. But when Jesus made the One God known as Father, Son and Spirit, he gave us a new vision of God. Through Jesus, God tells us something so new that we could never tell it to ourselves.
This new unveiling of God comes to us from God himself. He freely moved into human history in his Son, making himself known as he has never done before. And now he freely moves into human lives, by his Spirit, making himself known to individuals as he has never done before. Leander Beck says that, following the resurrection of Jesus and the coming of the Spirit, Paul had not only to think new and different thoughts; he had also to think old thoughts differently. So do we.
As God makes himself known in this new way, he calls into question what each person already claims to know. He shatters what we may already think about God. Whatever way we saw God, his coming personally to us in his new way opens up an entirely new way of seeing him that we never even imagined. Only God could make himself known to us in this way so that our knowing comes from God and through God. As Jesus once said, “No one knows the Son except the Father, and no one knows the Father except the Son and those to whom the Son chooses to reveal him.”