John 14:26

But the Helper, the Holy Spirit, whom the Father will send in my name, will teach you all things and will bring to remembrance all that I’ve said to you.

John 15:26-27

26 “When the Helper comes (i.e., the Holy Spirit of truth who goes out from the Father, whom I’ll send to you from the Father), he will testify about me. 27 And you also must testify, for you have been with me from the start.

John 16:8, 13-14

8 When (the Helper) comes, he will convict the world about sin, righteousness, and judgment.

13 But when he, the Spirit of truth, comes, he will guide you into all the truth. He won’t speak from within himself, but he will only tell you what he hears, and he will tell you what is coming. 14 And he will glorify me by receiving from me and disclosing it to you.