"The Bible begins with the statement: “In the beginning God created the heavens and the earth” (Gen. 1:1). God’s existence is assumed, self-evident. In Psalm 14:1 we are told, “The
fool has said in his heart, There is no God! They acted corruptly; they
have done abominable works, there is none who does good.”
Here we see that the Bible connects corrupt thoughts about
God—especially denying His very existence
—with corrupt morals.
And it is
true that if there is no God, no Creator who sets the rules, then we
are set adrift morally. When the children of Israel forgot their Creator
in the times of the Judges, when they had no-one leading them in being
faithful to God, “… every man did that which was right in his own eyes” (Judges 21:25), and chaos reigned." CMI