1 John 2:20-23, 27

But you are not like that, for the Holy One has given you his Spirit, and all of you know the truth. So I am writing to you not because you don’t know the truth but because you know the difference between truth and lies. And who is a liar? Anyone who says that Jesus is not the Christ. Anyone who denies the Father and the Son is an antichrist. Anyone who denies the Son doesn’t have the Father, either. But anyone who acknowledges the Son has the Father also.

But you have received the Holy Spirit, and he lives within you, so you don’t need anyone to teach you what is true. For the Spirit teaches you everything you need to know, and what he teaches is true—it is not a lie. So just as he has taught you, remain in fellowship with Christ.