1 John 2:22

22 Who is the liar? It is whoever denies that Jesus is the Christ. Such a person is the antichrist—denying the Father and the Son.

Read 1 John 2:22 Using Other Translations

Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
Who is the liar but he who denies that Jesus is the Christ? This is the antichrist, he who denies the Father and the Son.
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.