It is generally alleged that Muhammad (ﷺ) learnt the Qur'an from the Jews and Christians whom he met OUTSIDE ARABIA: But how could he do it as all historical records available show that Muhammad (ﷺ) had made only three trips outside Makkah before his Prophethood. (i) At the age of 6 he accompanied his mother to Madinah, (ii) Between the age of 9 & 12, he accompanied his uncle Abu-Talib on a business trip to Syria, and (iii) At the age of 25, he led Khadija's (RA) caravan to Syria. It is highly imaginary to assume that the Qur'an resulted from the occasional chats and meetings with the Christians or Jews from any of the above three trips.
The alleged 'learning' of Gospel by Muhammad (ﷺ) also makes a mention of a Christian noble man called Waraqa Ibn-Naufal who was blind and could not see. He was a relative of the Prophet's first wife Khadijah (RA.). He, although of Arab descent was a convert to Christianity and was very well versed with the New Testament. But the Prophet Muhammad (ﷺ) only met him twice in his lifetime. The first time was when the blind man was worshipping at Ka'abah and he kissed his forehead. The second was when wife of Prophet Muhammad (ﷺ) took him to the blind man after Muhammad (ﷺ) received the first revelation. And Waraqa told Khadija (RA) that whatever Muhammad (ﷺ) had told him sounds like a visitation by angel Gabriel who had been a messenger of Allah to all previous messengers. But Muhammad (ﷺ) died 3 years later while the revelation of Qur'an is spanned over a period of 23 years. If Muhammad (ﷺ) had learnt Qur'an from the blind man, why he would wait for next 23 years to make it public??
Some pagans even accused the Prophet (pbuh) of learning the Qur'an from a Roman Blacksmith, who was a Christian and lived in the outskirts of Mecca. The Prophet very often use to go and watch him do his work. A revelation of the Qur'an was sufficient to dismiss this change. The Qur'an says: "We know indeed that they say, "It is a man that teaches him." The tongue of him they wickedly point to is notably foreign, while this is Arabic, pure and clear." (Al Qur'an 16:103)
How could a person whose mother tongue was foreign and could hardly speak little but of poor broken Arabic be the source of the Qur'an which is pure, eloquent, fine Arabic? To believe that the blacksmith taught the Prophet (pbuh), the Qur'an, is somewhat similar to a Chinese immigrant to England, who did not know proper English, taught Shakespeare.
At the time of advent of Islam, the Arabic version of the Bible was not present. The earliest Arabic version of the old Testament is that of R. Saadias Gaon 900 C.E. - more than 250 years after the death of Muhammad (ﷺ). The oldest Arabic Version of the new testament was published by Erpenius in 1616 C.E. about a thousand years after the demise of our Prophet. So how could Muhammad (ﷺ) learn in detail the entire Bible from blacksmiths or interaction with traders in Syria and put across a well written document, known as Qur'an?
The theory that Muhammad (ﷺ) authored the Qur'an or copied from other sources can be disproved by the single historical fact that he was illiterate. and this fact is testified none but Allah in the Qur'an: "And you were not (able) to recite a Book before this (Book came), nor were you (able) to transcribe it with your right hand: in that case, indeed, would the talkers of vanities have doubled." (Al Qur'an 29:48)
And the mention of coming of a prophet is made in Torah and Gospel. And Allah says: "Those who follow the Messenger, the unlettered prophet, whom they find mentioned in their own (Scriptures) in the Law and the Gospel" (Al Qur'an 7:157)
If all above is taken to be correct, then how it would be justified that the mention of victory of the Roman Christians is made in the opening verses of Surah 30. Ar Rum in Verses 2-10: Romans (Christians / The Byzantines) defeat at the hands of Persian (Pagans) was taken as a sign of the Muslims defeat at the hands of Arab's unbelievers, so Allah gave good tidings for Roman's victory as well as Muslims victory in a few year( Verse 2 ) The Byzantines have been defeated( Verse 3 ) In the nearest land. But they, after their defeat, will overcome.
How could Muhammad (ﷺ) predict that? Was he fortune teller or a man who could see in the future? Read The historical background of revelation of Surah Ar Rum - The Romans for details.
Many scientists believe that RNA, or something similar to RNA, was the first molecule on Earth to self-replicate and begin the process of evolution that led to more advanced forms of life, including human beings.
But look when it was found that iron is an alien materiel: The cache dates from about 3,300 bc, making the beads the oldest known iron artifacts from Egypt. A study in 1928 found that the iron in the beads had a high nickel content — a signature of iron meteorites — and led to the suggestion that it was of celestial origin.
May Allāh (سبحانه و تعالى) help us understand Qur'ān and follow the Sunnah of Prophet Muhammad ﷺ, which is embodiment of commandments of Allah contained in the Qur'ān. May Allah help us to be like the ones He loves and let our lives be lived helping others and not making others' lives miserable or unlivable. May all our wrong doings, whether intentional or unintentional, be forgiven before the angel of death knocks on our door.