Ye do the deeds of your father; you imitate him who is indeed your father; by whom our Saviour (as we shall hear more afterwards) meaneth the devil. This they fume at, and tell him they were not born of fornication, which is, in our English dialect, as much as, We are no bastards; but it hath another sense in this place, as appeareth by the next words. We have one Father, even God; that is, we own and worship one God, who is our Father; which makes very good interpreters think, that their meaning in those words, We are not born of fornication, is, We are no idolaters; idolatry in holy writ being very ordinarily compared to whoredom and fornication.
Related Commentaries of John 8:41
John 8:41
41 Ye do the deeds of your father. Then said they to him, We be not born of fornication; we have one Father, even God.