John Lightfoot on John 8:33

[We be Abraham's seed, &c.] They were wont to glory of being Abraham's seed beyond all measure. Take one instance of a thousand:

"It is storied of R. Jochanan Ben Matthias, that he said to his son, 'Go out and hire us some labourers.' He went out and hired them for their victuals. When he came home to his father, his father said to him, 'My son, though thou shouldst make feasts for them, as gaudy as the feasts of Solomon, thou wouldst not do enough for them, because they are the children of Abraham, Isaac, and Jacob.'" And yet they confess "the merits of our fathers Abraham, Isaac, and Jacob, ceased from the days of Hosea the prophet, as saith Rabh; or as Samuel, from the days of Hazael."

But how came they to join this, "We be Abraham's seed, and were never in bondage to any man?" Is it impossible that one of Abraham's seed should be in bondage? The sense of these two clauses must be distinguished: "We are of the seed of Abraham, who are very fond and tenacious of our liberty; and as far as concerns ourselves, we never were in bondage to any man." The whole nation was infinitely averse to all servitude, neither was it by any means lawful for an Israelite to sell himself into bondage, unless upon the extremest necessity.

"It is not lawful for an Israelite to sell himself for that end merely, that he might treasure up the money, or might trade with it, or buy vessels, or pay a creditor; but barely if he want food and sustenance. Nor may he sell himself, unless when nothing in the world is left, not so much as his clothes, then let him sell himself. And he whom the Sanhedrim sells, or sells himself, must not be sold openly, nor in the public way, as other slaves are sold, but privately."