John 14:15-18

If ye love me, ye will keep my commandments. And I will pray the Father, and he shall give you another Comforter, that he may be with you for ever, even the Spirit of truth: whom the world cannot receive; for it beholdeth him not, neither knoweth him: ye know him; for he abideth with you, and shall be in you. I will not leave you desolate: I come unto you.