John 14:15-18

15 If you love me, keep my commandments.  16 I will pray to the Father, and he will give you another Counselor, that he may be with you forever,--  17 the Spirit of truth, whom the world can't receive; for it doesn't see him, neither knows him. You know him, for he lives with you, and will be in you.  18 I will not leave you orphans. I will come to you.