2 John 1:8 YLT

⁶  and this is the love, that we may walk according to His commands; this is the command, even as ye did hear from the beginning, that in it ye may walk,

⁷  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.

⁸  See to yourselves that ye may not lose the things that we wrought, but a full reward may receive;

⁹  every one who is transgressing, and is not remaining in the teaching of the Christ, hath not God; he who is remaining in the teaching of the Christ, this one hath both the Father and the Son;

¹⁰  if any one doth come unto you, and this teaching doth not bear, receive him not into the house, and say not to him, 'Hail!'