The foundation of ethics is human dignity, human survival and human happiness. The foundation of ethics is not God, nor does faith in God or some other kind of supernatural or ancient source of authority guarantee ethical behavior. Humanists do not judge people by what they believe.
Any honest consideration of human nature reveals that some people with faith in God behave admirably while others do not.Humanists judge people based on their behavior, which we consider to be the truest reflection of a person’s deepest commitments.
Another significant argument against the necessity of God for ethical decision making can be found in the fact that many people of faith fiercely disagree about the requirements of God.