King James Version
He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.English Standard Version
Whoever says "I know him" but does not keep his commandments is a liar, and the truth is not in him,New International Version
The man who says, "I know him," but does not do what he commands is a liar, and the truth is not in him.