The sin committed by Adam of disobeying the command of God, passes on to all human making them sinner by birth. So; “For as by one man’s disobedience many were made sinners, so by the obedience of one shall many be made righteous” (Roman;12:19). The inheritance of sin of ancestor by the descendants is against all ethics, morality and common logic. It is against the explicit pronouncement of God in Bible: “The soul that sins shall die. The son shall not suffer for the iniquity of the father, nor the father suffers for the iniquity of the son; the righteousness of the righteous shall be upon himself, and the wickedness of the wicked shall be upon himself. But if the wicked will turn from all his sins that he hath committed, and keep all my statutes, and do that which is lawful and right, he shall surely live, he shall not die.” (Ezekiel;18:20-21). “He pardons the believing sinners if they repent and seek His forgiveness: “I, I am He who blots out your transgressions for my own sake, and I will not remember your sins.”(Isiah;43:25); “for I will forgive their iniquity, and their sin will I remember no more.”(Jermiah;31:34); “that they may return every man from his evil way; that I may forgive their iniquity and their sin.”(Jermiah;36:3); “To the Lord our God belong mercies and forgiveness;”(Daniel;9:9); “But there is forgiveness with thee, That thou mayest be feared”(Psalms;103:4). The concept of repentance and forgiveness also exist in New Testament: “Just so, I tell you, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance.”(Luke;15:7), “Just so, I tell you, there is joy before the angels of God over one sinner who repents.”(Luke;15:10), “And the son said to him, ‘Father, I have sinned against heaven and before you; I am no longer worthy to be called your son.’ But the father said to his servants, ‘Bring quickly the best robe, and put it on him; and put a ring on his hand, and shoes on his feet; and bring the fatted calf and kill it, and let us eat and make merry; for this my son was dead, and is alive again; he was lost, and is found.’ And they began to make merry.”(Luke;15:21-24); “And forgive us our debts,”(Mathew:6:12, Luke;11:4).
Renowned scholar Steve A. Johnson writes: “In Islam the notion of original sin is regarded as inconsistent with the justice of God. How could a Just and Loving God make an innocent child responsible for, or at least bear the guilt for the sins of a distant ancestor?” Major Yeats-Brown, in his “Life of a Bengal Lancer”, summarizes the Christian Doctrine of the Original sin and Atonement in just a single sentence: “No heathen tribe has conceived so grotesque an idea, involving as it does the assumption, that man was born with a hereditary stain upon him: and that this stain (for which he was not personally responsible) was to be atoned for: and that the creator of all things had to sacrifice his only begotten son to neutralize this mysterious curse.”
Rejection of ‘Law’ against Mission of Jesus: Paul insisted that there was no need for converts to Christianity to accept Jewish dietary restrictions: “…there is nothing unclean of itself: but to him that esteems anything to be unclean, to him it is unclean.” (Romans;14:14). The circumcision, which was instituted by God (Genesis;17:9-10) and enforced by the law (Leviticus;12:3; John;7:22) was opposed by Paul, thus he was denounced (Acts; 21:21); “Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;”(Ephesians;2:15). He did not insist to conform to the rituals of the Mosaic Law, because to him, obedience to the Law alone cannot provide salvation. Paul wrote: “But now we are discharged from the law, dead to that which held us captive, so that we serve not under the old written code but in the new life of the Spirit.”(Romans;7:6).
This is deliberate outright rejection of the mission and teachings of Jesus (peace be upon him) who said: “Think not that I have come to abolish the law and the prophets; I have come not to abolish them but to fulfill them. For truly, I say to you, till heaven and earth pass away, not an iota, not a dot, will pass from the law until all is accomplished. Whoever then relaxes one of the least of these commandments and teaches men so shall be called least in the kingdom of heaven; but he who does them and teaches them shall be called great in the kingdom of heaven. For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven.”(Mathew;5:17-20). Hence it is logical to conclude that ‘Christianity’ as generally practiced today has nothing to do with Christ except that the name. It is based on the doctrines devised by Paul, who claimed to be his disciple and apostle long after his accession to heaven, though Jesus said: “The disciple is not above his master”: (Luke;6:40).