'Sinning' in the Bible

Now the scribes and Pharisees came, with a woman who had been taken in the act of sinning against the married relation;

And putting her forward, they said to him, Master, this woman has been taken in the very act of sinning against the married relation.

And in this way, doing evil to the brothers, and causing trouble to those whose faith is feeble, you are sinning against Christ.