Muslim scholars have argued that, Word of God should not contain any error thus Quran is infallible and does not contain any error. But it is not true. Quran contains major mistakes which makes Quran’s validity in question.
Some of the contradiction in Quran:
Quran sometimes condemns sin but on the other side gives green flag to commit wrong things.
Quran says in Surah 17:32-34. “Nor come nigh to adultery: for it is a shameful (deed) and an evil, opening the road (to other evils). Nor take life – which Allah has made sacred – except for just cause. And if anyone is slain wrongfully, we have given his heir authority (to demand qisas or to forgive): but let him nor exceed bounds in the matter of taking life; for he is helped (by the Law). Come not nigh to the orphan’s property except to improve it, until he attains the age of full strength; and fulfil (every) engagement, for (every) engagement will be enquired into (on the Day of Reckoning).”
But in Quran itself you can find that adultery is permitted as we read in Surah 2:230. “So if a husband divorces his wife (irrevocably), He cannot, after that, re-marry her until after she has married another husband and He has divorced her. In that case there is no blame on either of them if they re-unite, provided they feel that they can keep the limits ordained by Allah. Such are the limits ordained by Allah, which He makes plain to those who understand.”
We see that Muhammad was willing to marry his adopted son’s wife. So Allah permitted him by changing the rules as we read in Surah 33:50, “O Prophet! We have made lawful to thee thy wives to whom thou hast paid their dowers; and those whom thy right hand possesses out of the prisoners of war whom Allah has assigned to thee; and daughters of thy paternal uncles and aunts, and daughters of thy maternal uncles and aunts, who migrated (from Makka) with thee; and any believing woman who dedicates her soul to the Prophet if the Prophet wishes to wed her;- this only for thee, and not for the Believers (at large); We know what We have appointed for them as to their wives and the captives whom their right hands possess;- in order that there should be no difficulty for thee. And Allah is Oft- Forgiving, Most Merciful.”
Killing innocent people is permitted in Surah 4:89. They but wish that ye should reject Faith, as they do, and thus be on the same footing (as they): But take not friends from their ranks until they flee in the way of Allah (From what is forbidden). But if they turn renegades, seize them and slay them wherever ye find them; and (in any case) take no friends or helpers from their ranks;-
Quran tells us that Mary the mother of Jesus was sister of Aaron as we read in Surah 19:28. “O sister of Aaron! Thy father was not a man of evil, nor thy mother a woman unchaste!” If we read further we can understand that it was spoken about Jesus’ mother Mary Surah 19:34. Such (was) Jesus the son of Mary: (it is) a statement of truth, about which they (vainly) dispute, And Surah 66:12 says, “And Mary, daughter of Imran, whose body was chaste, therefore We breathed therein something of Our spirit. And she put faith in the words of her Lord and His Scriptures, and was of the obedient.”
Aaron who was the brother of Moses was not the sister of Mary because Mary came many thousands of years later and she was also not the daughter of Imran.
Some Surahs tell us that Jesus died but some deny the death of Jesus on the cross. We read in Surah 19:33. “So peace is on me the day I was born, the day that I die, and the day that I shall be raised up to life (again)”! But in Surah 4:157. “That they said (in boast), “We killed Christ Jesus the son of Mary, the Messenger of Allah.;- but they killed him not, nor crucified him, but so it was made to appear to them, and those who differ therein are full of doubts, with no (certain) knowledge, but only conjecture to follow, for of a surety they killed him not.”
By all these things you can understand that Quran has so many misconception and mistakes which should not be there if it came directly from God or if it was word of God. Unlike Quran, Bible does not contain such mistakes though Bible was written by 40 different prophets and apostles during different time period. Bible’s message is consistant and it never contradicts the theme and message of the Bible.