The eyes of the LORD are in every place, Keeping watch on the evil and the good (Proverbs 15:3, NKJV). The fool has said in his heart there is no God; this is because he is entirely ignorant that the Lord is watching him! The fool is not only the atheist, but also the one who believes in the Lord, but refuses to modify a life (his own) toward that which is righteous. The sentiment is has an obvious application. There is nothing one can do, there is nothing one can say, there is nothing one can think that the Lord does not already know about. Sobering!