John 14:20-21

“ In that day you shall know that I am in my Father and you in me and I in you. 21. He who has my commandments and keeps them, he it is who loves me; and he who loves me shall be loved by my Father, and I will love him and will manifest myself to him. ”

The absence of a particle between these words and the preceding and following ones betrays the emotion with which Jesus contemplates and foretells the decisive day of Pentecost. It is, in a new form, the reaffirmation of the same promise.

The expression that day indicates a precise moment, not a period, as Reuss thinks. And as the great circumstances of Jesus' ministry connect themselves naturally with the Jewish feasts, and as the feast of the Passover, which was about to be the time of His death, was to be followed soon by that of Pentecost, there is nothing to prevent us from thinking, whatever Lucke, de Wette, Weiss, etc., may say, that the day of which He is here speaking was already in their view the day of Pentecost; comp. the ἔτι μικρόν, in a little while, John 14:19. However this may be, Jesus contrasts this day of the coming of the Spirit, whatever it is, with the present moment, when the disciples have so much difficulty in forming an idea of the relation of their Master to the Father (John 14:9-10). ῾Υμεῖς, you: “from your own experience, and not only, as to-day, from my words.” Comp. John 16:25. The object of this spiritual illumination of believers will be, first, the relation of Jesus to the Father; they will have a consciousness of Jesus as of a being who lives and acts in God, and in whom God lives and acts as in another self. This immediate consciousness of the relations between Jesus and God will spring from the living consciousness which they will receive of their own relation to Jesus; they will feel Him living in them and will feel themselves living in Him; and in the experience of this relation to Him (they transported into Him and He transported into them), they will understand that which He had said to them, without succeeding in making Himself understood, of what God is to Him and what He is to God. Then, finally, the transcendent fact of the communion between Jesus and God will become for them the object of a distinct perception through the immediate experience of their own communion with Jesus. These are the μεγαλεῖα τοῦ θεοῦ, the wonderful things of God, which Peter and the disciples celebrate in new tongues on the day of Pentecost.