The fool says in his heart, "There is no God."
That's how this Psalm begins. 5 verses later it ends with these words...
Oh, that the salvation for Isreal would come out of Zion! When God restores the fortunes of His people, let Jacob rejoice and Isreal be glad!
I love that this Psalm ends on a note of restoration. When I started reading I began to think of all the people I know who don't believe that there is a God. It saddens me that there are those who should know better and have turned their backs on Him, to the point of doubting His existence. Scripture makes clear the consequence for unbelief and rebellion from God. But the end of this Psalm reminds me not to give up hope, not to stop praying for their salvation and restoration. I praise God for His work in their lives and I ask Him to pursue them more fervently and to give them hearts receptive to His advances. And when He does restore them to fellowship with Him, we will rejoice and be glad! Praise the Lord for His goodness and mercy! His love endures forever!