1 John 2:4 in the World English Bible
One who says, “I know him,” and doesn’t keep his commandments, is a liar, and the truth isn’t in him.
Context
3 And hereby we do know that we know him, if we keep his commandments.
4 He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
5 But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.