From the very beginning of time, Satan has been doing all he can to get men and women to doubt God. He wants to manipulate individuals to the point where they not only don't trust in God, but that they will firmly believe that God doesn't even exist. Yet, in the book of Psalms 53:1, King David declares: “Only fools say in their hearts, there is no God.” Because there is more than enough evidence to prove God exists. But what is it and where is this evidence found? In the 19th Psalm, David tells us why he believed in God. He distinctively lists 3 areas in which God declares His existence.