Before Adam sinned Cain’s offering of the fruit of the field would have been accepted by God. After Adam sinned it was not. The death of an animal involved in the burnt offering showed that someone outside the offerer had to make atonement for the sin of the offerer. Islam denies these facts and clings to the forlorn hope that a man can get to paradise through the merit of his good works. In Islam salvation is a joint venture of man’s own good works and the forgiveness of Allah. This is a contradiction of biblical teaching. The righteousness that propitiates and justifies belongs solely to Christ. We contribute nothing towards it. We only appropriate it by faith.