Charles H. Spurgeon on Psalms 95:10

O the desperate presumption of man, that he should offend his Maker forty years! O the patience and longsuffering of his Maker, that he should allow him forty years to offend in! Sin begins in the heart, by its desires wandering and going astray after forbidden objects; whence follows inattention to the ways of God, to his dispensations, and our own duty. Lust in the heart, like vapour in the stomach, soon affects the head, and clouds the understanding. —George Horne.