Gregory the Great
Catena Aurea · Johannesevangelium 8
Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed; And ye shall know the truth, and the truth shall make you free. They answered him, We be Abraham’s seed, and were never in bondage to any man: how sayest thou, Ye shall be made free? Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin. And the servant abideth not in the house for ever: but the Son abideth ever. If the Son therefore shall make you free, ye shall be free indeed. And ye shall know the truth.
(iv. Mor. c. 42. in Nov. Ex. 21) Because whoever yields to wrong desires, puts his hitherto free soul under the yoke of the evil one, and takes him for his master. But we oppose this master, when we straggle against the wickedness which has laid hold upon us, when we strongly resist habit, when we pierce sin with repentance, and wash away the spots of filth with tears.