'Sinning' in the Bible

But if any man thinks he is acting improperly toward his virgin, if she is past marriageable age, and so it must be, he can do what he wants. He is not sinning; they can get married.

Now when you sin like this against the brothers and wound their weak conscience, you are sinning against Christ.

Come to your senses and stop sinning, for some people are ignorant about God. I say this to your shame.