Gregory the Great

(ut sup.) Let him then, who would understand God’s words, ask himself whether he hears them with the ears of his heart. For there are some who do not deign to hear God’s commands even with their bodily ears; and there are others who do this, but do not embrace them with their heart’s desire; and there are others again who receive God’s words readily, yea and are touched, even to tears: but who afterwards go back to their sins again; and therefore cannot be said to hear the word of God, because they neglect to practise it.