At that day you shall know that I am in my Father, and you in me, and I in you.
ye shall.
John 14:10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.
John 10:38 But if I do, though ye believe not me, believe the works: that ye may know, and believe, that the Father is in me, and I in him.
John 17:7,11,21-23,26 Now they have known that all things whatsoever thou hast given me are of thee…
ye in.
John 6:56 He that eateth my flesh, and drinketh my blood, dwelleth in me, and I in him.
John 15:5-7 I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing…
Romans 8:1 There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit.
you will know
The knowledge mentioned here is not merely intellectual but experiential and spiritual. It signifies a profound realization and assurance that comes through the Holy Spirit. This aligns with the promise of the Spirit as the Counselor who will teach and remind the disciples of everything Jesus has said (John 14:26).
that I am in My Father
This phrase emphasizes the unity and intimate relationship between Jesus and the Father. It reflects the theological concept of the Trinity, where the Father, Son, and Holy Spirit are distinct yet one. This unity is a recurring theme in John's Gospel, as seen in John 10:30, where Jesus declares, "I and the Father are one."
and you are in Me
Here, Jesus speaks of the believers' union with Him. This concept is foundational to Christian identity and is further elaborated in passages like John 15:5, where Jesus describes Himself as the vine and believers as the branches. This union signifies a shared life, purpose, and destiny with Christ.
and I am in you
This phrase highlights the indwelling presence of Christ in the believer through the Holy Spirit. It is a promise of continual fellowship and empowerment, as seen in Galatians 2:20, where Paul states, "Christ lives in me." This indwelling is a source of strength, guidance, and transformation for the believer.
• Jesus is pointing ahead to a specific “day,” most naturally the resurrection morning and, by extension, the coming of the Holy Spirit at Pentecost.
• When the risen Christ stood among the disciples (John 20:19–22) and later poured out the Spirit (Acts 2:1-4), confusion vanished and knowledge flooded in—just as He had promised in John 16:13.
• The Lord’s words assure believers that revelation is anchored in real historical events, not private speculation.
• Jesus reaffirms His eternal unity with the Father, a truth He had already declared: “the Father is in Me, and I in the Father” (John 10:38).
• This unity means all the fullness of deity dwells in Christ bodily (Colossians 2:9), echoing the praise that “the Son is the radiance of God’s glory” (Hebrews 1:3).
• Because the resurrection verified His claim, every promise He makes carries the full authority of the Father.
• Union with Christ becomes the believer’s new location: “if anyone is in Christ, he is a new creation” (2 Corinthians 5:17).
• Jesus had illustrated this with the vine and branches: “Abide in Me, and I will abide in you” (John 15:4).
• Practically, being “in Christ” means
– Freedom from condemnation (Romans 8:1)
– Hidden life with Him in God (Colossians 3:3)
– A shared inheritance and purpose (Ephesians 1:11-12)
• The indwelling Lord is the flip side of our being in Him. Paul could say, “Christ lives in me” (Galatians 2:20) and call this mystery “Christ in you, the hope of glory” (Colossians 1:27).
• Jesus expands this promise in the same chapter: “We will come to him and make Our home with him” (John 14:23).
• His presence brings
– Ongoing guidance (Romans 8:14)
– Empowerment for obedience (Philippians 2:13)
– Assurance of future resurrection (Romans 8:11)
John 14:20 draws a breathtaking circle of relationship: the Son perfectly one with the Father, believers securely placed in the Son, and the Son personally living in believers. Resurrection and Pentecost confirmed it, and every day that we walk with Christ we taste its reality—knowing, abiding, and being indwelt by Him who is forever in the Father.
(20) At that day ye shall know--i.e., the day of the gift of the Comforter, in whom Christ shall come to them. In the first reference the Day of Pentecost is meant, but the words hold good of every spiritual quickening, and will hold good of the final coming in the last day. The pronoun "ye" is emphatic--"Ye shall know for yourselves."That I am in my Father, and ye in me, and I in you.--Comp. Note on John 10:38. The result of this spiritual illumination would be that they should of themselves know the immanence of the Son in the Father, and their own union with the Father through Him. They ask now (John 14:8) for a manifestation of the Father. The Spirit should so bring the life of Christ to their hearts that they would read in it the manifestation of the Father, and feel that in and through that life their own spirit has communion with God. The Spirit would witness with their spirit that they were the children of God. They would seek no longer for a Theophany from without, but in the depth of their inmost lives would cry, "Abba, Father."
Verse 20. - 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.