1 John 2:3-5

Darby Translation

³ And hereby we know that we know him, if we keep his commandments.

⁴ He that says, I know him, and does not keep his commandments, is a liar, and the truth is not in him;

⁵ but whoever keeps his word, in him verily the love of God is perfected. Hereby we know that we are in him.