'Spirit of Truth' in the Bible

"and I will pray the Father, and he will give you another Comforter to be with you forever, the Spirit of Truth.

"When the Comforter is come whom I will send to you from the Father, the Spirit of Truth who comes forth from the Father, he will bear witness of me;

But when he is come, that Spirit of Truth, he will guide you into the whole truth. For he will not speak on his own authority, but all that he hears he will speak, and will make known to you that which is to come.

But you are of God. He who is beginning to know God listens to us; he who is not of God does not listen to us. By this we may distinguish the spirit of truth from the spirit of error.