Pseudo-Chrysostom
Catena Aurea · Matthäusevangelium 3
But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come? Bring forth therefore fruits meet for repentance: And think not to say within yourselves, We have Abraham to our father: for I say unto you, that God is able of these stones to raise up children unto Abraham. And now also the axe is laid unto the root of the trees: therefore every tree which bringeth not forth good fruit is hewn down, and cast into the fire.
What avails noble birth to him whose life is disgraceful? Or, on the other hand, what hurt is a low origin to him who has the lustre of virtue? It is fitter that the parents of such a son should rejoice over him, than he over his parents. So do not you pride yourselves on having Abraham for your father, rather blush that you inherit his blood, but not his holiness. He who has no resemblance to his father is possibly the offspring of adultery. These words then only exclude boasting on account of birth.