Charles H. Spurgeon on Psalms 52:7

Lo. Look ye here, and read the epitaph of a mighty man, who lorded it proudly during his little hour, and set his heel upon the necks of the Lord's chosen. This is the man that made not God his strength. Behold the man! The great vainglorious man. He found a fortress, but not in God; he gloried in his might, but not in the Almighty. Where is he now? How has it fared with him in the hour of his need? Behold his ruin, and be instructed. But trusted in the abundance of his riches, and strengthened himself in his wickedness. The substance he had gathered, and the mischiefs he had wrought, were his boast and glory. Wealth and wickedness are dreadful companions; when combined they make a monster. When the devil is master of money bags, he is a devil indeed. Beelzebub and Mammon together heat the furnace seven times hotter for the child of God, but in the end that shall work out their own destruction. Wherever we see today a man great in sin and substance, we shall do well to anticipate his end, and view this verse as the divine in memoriam.