There are two things that are suited to humble the souls of men– a due consideration of God, and then of ourselves. Of God, in His greatness, glory, holiness, power, majesty, and authority; of ourselves, in our mean, abject, and sinful condition. The man that understands the evil of his own heart, how vile it is, is the only useful, fruitful, and solidly believing and obedient person.
John Owen, Triumph Over Temptation