The lesson that Allah taught mankind, on accepting Adam's repentance for eating from the forbidden tree, represents the first incident of the Lord's forgiveness to mankind. The Christians' belief of inherited sin from Adam is meaningless, as no bearer of burden will bear the burden of another. In other words, everyone will be alone responsible for his own sins, and this is a manifestation of the Lord's mercy. Man is born pure and sinless and becomes responsible for his deeds since the age of puberty.
If man wants to disobey Allah, then, he must not eat from His provision and must go out of His land and seek a secure place where Allah cannot see Him. And when the angel of death comes to take his soul, let him ask for a respite to repent ...
First of all, the true religion must be compatible with man's initial natural disposition that needs a direct relationship with its Creator without the interference of mediators, which represents man's virtues and good qualities.
There is something called the sound Fitrah (natural disposition) or the sound logic. So, whatever conforms to logic and to the sound natural disposition and the sound mind is from Allah, and whatever is complicated is from human beings.
