John 16:7-8

But I tell you the truth, it is to your advantage that I go away; for if I do not go away, the Helper (Comforter, Advocate, Intercessor—Counselor, Strengthener, Standby) will not come to you; but if I go, I will send Him (the Holy Spirit) to you [to be in close fellowship with you]. And He, when He comes, will convict the world about [the guilt of] sin [and the need for a Savior], and about righteousness, and about judgment