Nothing reaches a man except through his own I am, and the one who gives and the one given to turn out to be the same. The Father hands all things to the Son because Father and Son are awareness and the self that awareness wears, and the two cannot be pulled apart. The Father is not known from outside. Such knowing is an inner event, never a piece of news carried in from elsewhere.
The Son who alone can reveal the Father is David. When David is brought forth out of a man and calls him Father, the man discovers he is God the Father, and not one moment before. This mutual knowing has to be lived; being told it changes nothing. The revealing is the son within turning and pointing home.