Craig Groschel quoted a recent Gallup Poll in his book The Christian Atheist. According to the survey, 94 percent of Americans claim to believe in God or a universal spirit. What that means, of course, is that 6 out of 100 Americans claim to be atheists.
The word for fool in Psalm 14 is the Hebrew term nabal. In this context, “fool” refers to a person who is “evil, corrupt and perverse.” This is the way that atheists live. They are wicked and have made a decision to hate God, even though they know that He exists. (Romans 1:18-22)
As Groeschel pointed out, there are many people who claim to believe in God, but their lives show no evidence of it. They are “practical” atheists. God has no part of their daily schedule or thoughts.
Do you really believe in God? If so, then how does your life prove it?