John 14:17
Even the Spirit of reality, whom the world cannot receive, because it does not behold Him or know Him; but you know Him, because He abides with you and shall be ³in you.

    17³ This is the first time that the promise of the Spirit’s indwelling is revealed. It is fulfilled and fully developed in the Epistles. See 1 Cor. 6:19 and Rom. 8:9, 11.