2 John 1:7-13

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!'
11 for he who is saying to him, `Hail,' hath fellowship with his evil works.
12 Many things having to write to you, I did not intend through paper and ink, but I hope to come unto you, and speak mouth to mouth, that our joy may be full;
13 salute thee do the children of thy choice sister. Amen.
Young's Literal Translation is in the public domain.