To Florus 1.89
To make you understand that he reproaches their lives rather than their nature, he continues: “I know that you are Abraham's children” (John 8:37). There is the dignity of descent on account of which they had declared themselves free. Now he shows the slavery to which they are subject: “You seek to kill me, because my word finds no room in you. I speak what I have heard with my Father; and you do what you have seen with your father” (John 8:37–38).