1 John 2:22-24

22Who is the one who tells the worst lies? It is anyone who says that Jesus is not the Messiah. A person like that is the enemy of Christ. He is speaking against God, the Father, and against Jesus, his Son.

23Anyone who says that Jesus is not God's Son does not belong to the Father. But anyone who accepts Jesus as the Son of God also belongs to the Father.

24As for you, always remember the true message that you heard at the beginning. If you continue to believe that message, you will continue to live with the Son and with the Father.