1st John Chapter 2 verse 4 Holy Bible
He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him;
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The man who says, I have knowledge of him, and does not keep his laws, is false, and there is nothing true in him:
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He that says, I know him, and does not keep his commandments, is a liar, and the truth is not in him;
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He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
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One who says, "I know him," and doesn't keep his commandments, is a liar, and the truth isn't in him.
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he who is saying, `I have known him,' and his command is not keeping, a liar he is, and in him the truth is not;
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Pulpit Commentary
Pulpit CommentaryVerse 4. - The participial substantive ὁ λέγων now takes the place of ἐάν with the subjunctive, but the two are equivalent (cf. 1 John 1:6, which is almost exactly parallel to this, and shows what "knowing him" really is, viz. having fellowship with him, just as not keeping his commandments is the same as walking in darkness). St. John says, μὴ τηρῶν, not, οὐ τηρῶν, the case being hypothetical - if there be such a man, he is a liar, and has no idea of truth (see on 1 John 1:8). He must have lost the very power of recognizing truth to maintain that he knows Christ, when he habitually transgresses his commands. It is no great thing, as Bode says, to know as the devils do, who "believe and tremble."