'Anti christ' in the Bible

Little youths, it is the last hour; and even as ye heard that the antichrist doth come, even now antichrists have become many -- whence we know that it is the last hour;

Who is the liar, except he who is denying that Jesus is the Christ? this one is the antichrist who is denying the Father and the Son;

and every spirit that doth not confess Jesus Christ in the flesh having come, of God it is not; and this is that of the antichrist, which ye heard that it doth come, and now in the world it is already.

because many leading astray did enter into the world, who are not confessing Jesus Christ coming in flesh; this one is he who is leading astray, and the antichrist.