This is another excerpt from Bill Warner’s book Abridged Koran where the verses of Koran are arranged in their chronological order and provided with facts from prophet Muhammad’s life, giving context for them.
CHAPTER 5 (continued)
There was one Christian in Mecca in whom Mohammed took an interest. In the market there was a Christian slave who ran a booth. Mohammed would go and speak with him at length. This led to the Quraysh saying that what Mohammed said in the Koran, came from the Christian slave. The Koran’s response:
16:101 When We exchange one verse for another, and Allah knows best what He reveals, they say, “You are making this up.” Most of them do not understand.
16:102 Say: The Holy Spirit [Gabriel] has truthfully revealed it from your Lord so that it may confirm the faith of those who believe and be a guide and good news for those who submit. We know that they say, “It is a man that teaches him.” The man [his name is uncertain] they point to speaks a foreign language while this is clear Arabic.
11:12 You may feel like abandoning part of what was revealed to you, and you will be distressed at heart for fear of them, saying, “Why has there not been a treasure or an angel sent down with him?” You are there only to warn. Allah has all things in his charge. Or they might say, “He invented the Koran.” Say: Then invent ten Suras of your own, and call whomever you can to help you besides Allah if you are men of truth. If your false gods do not answer you, then know that this has been sent to you with the awareness of Allah and that there is no Allah but He. Will you submit to Islam, then?
32:1 ALIF. LAM. MIM. This Book is without a doubt a revelation sent down from the Lord of the worlds. Do they say, “He [Mohammed] has made it up”? No. It is the truth sent from your Lord so that you may warn a people who have not yet been warned so that they may be guided.