Deuteronomy 17:20

That his heart be not lifted up; he intimates, that the Scriptures, diligently read and studied, are a powerful and probable means to keep him humble, because they show him that, though a king, he is subject to a higher Monarch, to whom he must give an account of all his administrations and actions, and receive from him his sentence and doom agreeable to their quality, which is sufficient to abate the pride of the haughtiest person in the world, if he duly consider it.