Rom 4:1 What shall we say then that Abraham our father, as pertaining to the flesh, hath found?
Rom 4:2 For if Abraham were justified by works, he hath [whereof] to glory; but not before God.
Rom 4:3 For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness.
Rom 4:4 Now to him that worketh is the reward not reckoned of grace, but of debt.
This is what I have been saying for a long time...Paul used Abraham to the Jews because the Jews believed he was Justified because of his righteousness. NO Paul is telling them...that is NOT true,for if it were God would be Abrahams debtor..owing him grace because of his obedience