1 John 1:6
If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:
Torrey's Topical Textbook—AKJV

1 John 2:4
He that said, I know him, and keeps not his commandments, is a liar, and the truth is not in him.
Torrey's Topical Textbook—AKJV