Charles H. Spurgeon on Psalms 36:1

The transgression of the wicked. His daring and wanton sin; his breaking the bounds of law and justice. Saith within my heart, that there is no fear of God before his eyes. Men's sins have a voice to godly ears. They are the outer index of an inner evil. It is clear that men who dare to sin constantly and presumptuously cannot respect the great Judge of all. Despite the professions of unrighteous men, when we see their unhallowed actions our heart is driven to the conclusion that they have no religion whatever. Unholiness is clear evidence of ungodliness. Wickedness is the fruit of an atheistic root. This may be made clear to the candid head by cogent reasoning, but it is clear already and intuitively to the pious heart. If God be everywhere, and I fear him, how can I dare to break his laws in his very presence? He must be a desperate traitor who will rebel in the monarch's own halls. Whatever theoretical opinions bad men may avow, they can only be classed with atheists, since they are such practically. Those eyes which have no fear of God before them now, shall have the terrors of hell before them for ever.