'Says' in the Bible

One who says, "I know him," and doesn't keep his commandments, is a liar, and the truth isn't in him.

he who says he remains in him ought himself also to walk just like he walked.

He who says he is in the light and hates his brother, is in the darkness even until now.

If a man says, "I love God," and hates his brother, he is a liar; for he who doesn't love his brother whom he has seen, how can he love God whom he has not seen?