lets analyse shall we.
in the bible when it talks about the creation of the heavens and the earth, it says (in genesis i believe) that god created everything in 6 days. 6, 24h days to be precise.
it says the sun was created on the 4'th day and the earth on the 3'rd day.
the quran says, the heavens and the earth were created in 6 days (periods of which only Allah knows the length). it says the earth and everything in it were created in 4 days, the rest of the creation of the 7 universes including ours took 2 days.
if the quran had copied the bible then surely how could Muhamed (saws) had know that the following is a wrong statement and a contradiction in the bible:
the contradiction and error in the bible regarding this is that it took 6 24h days to create everything, but the sun was not created untill the 4'th day. so how can someone possibly make a logical claim that the other 3 previous days were 24 hours long when the sun was still not created? as we all know the earth has to do one full circulation in it's place and at the same time also be circulating the sun for a 24 hour day to pass.
how could Muhammed (saws) have known that this is wrong and therefore he had to change it?
this is one of the many examples that the bible has been changed and contains errors and that the quran is not a copy of the bible, but that they have the same author.
This may help you see what i mean: