John 14:10-11, 20

Do you not believe that I am in the Father, and the Father is in Me? The words I say to you I do not say on My own initiative or authority, but the Father, abiding continually in Me, does His works [His attesting miracles and acts of power]. Believe Me that I am in the Father and the Father is in Me; otherwise believe [Me] because of the [very] works themselves [which you have witnessed].

On that day [when that time comes] you will know for yourselves that I am in My Father, and you are in Me, and I am in you.