Sin demands atonement. Atonement puts God and man at one. When atonement is made man is cleansed and forgiven. In other words, things are made right.
Sin and those who participate therein anger Lord. In the days of Noah, sin grieved the Lord so badly that it repented God that he had made man on the earth.
It is always right to do right, but it is more perfectly right to do right for the right reasons. In other words, serve the Lord, but do so out of a pure motive.
