With the Christian answer it is now possible to understand that there are true moral absolutes. There is no law behind God, because the furthest thing back is God. The moral absolutes rest upon God’s character.
The creation as He originally made it conformed to His character. The moral commands He has given to men are an expression of His character. Men as created in His image are to live by choice on the basis of what God is.
The standards of morality are determined by what conforms to His character, while those things which do not conform are immoral. God can know about things that are not actualized. For example, he knew all about Eve, but she was not actualized until He made her. The same thing can be true in the area of morals. When man sins, he brings forth what is contrary to the moral law of the universe and as a result he is morally and legally guilty. Because man is guilty before the Lawgiver of the universe, doing what is contrary to His character, his sin is significant and he is morally significant in a significant history. Man has true moral guilt.
This is entirely different from the conception of modern thought, which states that actions do not lead to guilt — a view within which actions thus become morally meaningless. Even the most degraded actions of sin have no final moral meaning. Ultimately “good” and “bad” actions alike are zero. This is an important factor in modern man seeing man as zero.
Thoughts developed and/or taken from the works of Dr. Francis A. Schaeffer, Trilogy – The God Who Is There