37 I know that ye are Abraham's seed: yet ye seek to kill me, because my word hath not free course in you.
38 I speak the things which I have seen with [my] Father: and ye also do the things which ye heard from [your] father.
39 They answered and said unto him, Our father is Abraham. Jesus saith unto them, If ye were Abraham's children, ye would do the works of Abraham. 40 But now ye seek to kill me, a man that hath told you the truth, which I heard from God: this did not Abraham.
Matthew Henry's Commentary on John 8:37-40
Commentary on John 8:37-40
(Read John 8:37-40)
Our Lord opposed the proud and vain confidence of these Jews, showing that their descent from Abraham could not profit those of a contrary spirit to him. Where the word of God has no place, no good is to be expected; room is left there for all wickedness. A sick person who turns from his physician, and will take neither remedies nor food, is past hope of recovery. The truth both heals and nourishes the hearts of those who receive it. The truth taught by philosophers has not this power and effect, but only the truth of God. Those who claim the privileges of Abraham, must do Abraham's works; must be strangers and sojourners in this world; keep up the worship of God in their families, and always walk before God.