After His ascension He was able to come to all wherever they may be, at all time and utterly intimately, inwardly. Thus He could promise to be with all His Own.
And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;
Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
I will not leave you comfortless: I will come to you.
So Christ the Truth, John 14/6, is communicated to us by the Holy Spirit, the Spirit of Truth.