'Saying' in the Bible

he who is saying, 'I have known him,' and his command is not keeping, a liar he is, and in him the truth is not;

He who is saying in him he doth remain, ought according as he walked also himself so to walk.

he who is saying, in the light he is, and his brother is hating, in the darkness he is till now;

If anyone sees his brother committing a sin that does not bring death, he should ask, and God will give life to him—to those who commit sin that doesn’t bring death. There is sin that brings death. I am not saying he should pray about that.