But now I go unto him that sent me; and none of you asketh me, Whither goest thou? But because I have spoken these things unto you, sorrow hath filled your heart. Nevertheless I tell you the truth: It is expedient for you that I go away; for if I go not away, the Comforter will not come unto you; but if I go, I will send him unto you. And he, when he is come, will convict the world in respect of sin, and of righteousness, and of judgment: of sin, because they believe not on me; of righteousness, because I go to the Father, and ye behold me no more; of judgment, because the prince of this world hath been judged. I have yet many things to say unto you, but ye cannot bear them now. Howbeit when he, the Spirit of truth, is come, he shall guide you into all the truth: for he shall not speak from himself; but what things soever he shall hear, these shall he speak: and he shall declare unto you the things that are to come. He shall glorify me: for he shall take of mine, and shall declare it unto you. All things whatsoever the Father hath are mine: therefore said I, that he taketh of mine, and shall declare it unto you.
Jesus told him, "I am the way, the truth, and the life. No one can come to the Father except through me." (John 14:6)