1 John 2:18-27 - Departure Of The False Teachers
18 Little children, it is the last hour. Just as you heard that an antichrist is coming, so now many antichrists have appeared. This is how we know it is the last hour. 19 They left us, but they were not part of us, for if they had been part of us, they would have stayed with us. Their leaving made it clear that none of them was really part of us.
20 You have an anointing from the Holy One and know all things. 21 I have not written to you because you do not know the truth, but because you do know it and because lies don't come from truth. 22 Who is a liar but the person who denies that Jesus is the Messiah? The person who denies the Father and the Son is an antichrist. 23 No one who denies the Son has the Father. The person who acknowledges the Son also has the Father.
24 What you have heard from the beginning must abide in you. If what you have heard from the beginning abides in you, you will also abide in the Son and in the Father. 25 The message that the Son himself declared to us is eternal life. 26 I have written to you about those who are trying to deceive you.
27 The anointing you received from God abides in you, and you do not need anyone to teach you this. Instead, because God's anointing teaches you about everything and is true and not a lie, abide in him, as he taught you to do.