'Anti christ' in the Bible

Little children, it is the last hour; and, as ye heard that Anti-Christ is coming, even now many anti-christs have arisen; whence we know that it is the last hour.

Who is the liar, but he that denies that Jesus is the Christ? This is the Anti-Christ, he that denies the Father and the Son.

and every spirit that confesses not Jesus is not of God; and this is the spirit of the Anti-Christ, of which ye have heard that it is coming, and now it is in the world already.