“We are Abraham’s descendants,” they answered. “We have never been slaves to anyone. How can You say we will be set free?”
33. We are Abraham’s seed. It is uncertain if the Evangelist here introduces the same persons who formerly spoke, “Ceux-la mesmes parlans, qui parloyent auparavant.” or others. My opinion is, that they replied to Christ in a confused manner, as usually happens in a promiscuous crowd; and that this reply was made rather by despisers than by those who believed.
We have in these verses, I. A comfortable doctrine laid down concerning the spiritual liberty of Christ's disciples, intended for the encouragement of those Jews that believed. Christ, knowing that his doctrine began to work upon some of his hearers, and perceiving that virtue had gone out of him, turned his discourse from the proud Pharisees, and addressed himself to those weak believers.
Commenting on John 8:31-37
If the Son therefore shall make you free,.... Alluding to the custom of adoption by the sons or brethren in the family, which obtained in Greece, called "the adoption of brethren", as Grotius, and others have observed; or rather to a custom among the Romans, of a son's making free after his Father's death, such as were born slaves in his house.