1 John 2:22

Children, it is the last hour; and just as you heard that antichrist is coming, even now many antichrists have appeared. From this we know that it is the last hour.

and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, of which you have heard that it is coming, and now it is already in the world.

Everyone who believes that Jesus is the Christ has been born of God, and everyone who loves the One who gives new birth loves also the one who has been born of Him.

For certain persons have crept in unnoticed, those who were long beforehand marked out for this condemnation, ungodly persons who turn the grace of our God into sensuality and deny our only Master and Lord, Jesus Christ.