I John 2:4-6 NAS
The one who says,
"I have come to know Him," and does not keep His commandments is
a liar, and the truth is not in him; but whoever keeps His word, in him
the love of God has truly been perfected. By this we know that we
are in Him: the one who says he abides in Him ought himself to walk in the
same manner as He walked.