Gregory the Great
Catena Aurea · Johannesevangelium 8
Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it. And because I tell you the truth, ye believe me not. Which of you convinceth me of sin? And if I say the truth, why do ye not believe me? He that is of God heareth God’s words: ye therefore hear them not, because ye are not of God. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
(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.