Adam Clarke on John 8:41

Ye do the deeds of your father - You have certainly another father than Abraham - one who has instilled his own malignant nature into you; and, as ye seek to murder me for telling you the truth, ye must be the offspring of him who was a murderer from the beginning, and stood not in the truth, Joh 8:44.

We be not born of fornication - We are not a mixed, spurious breed - our tribes and families have been kept distinct - we are descended from Abraham by his legal wife Sarah; and we are no idolaters.

We have one Father, even God - In the spiritual sense of father and son, we are not a spurious, that is, an idolatrous race; because we acknowledge none as our spiritual father, and worship none as such, but the true God. See Bishop Pearce.