The OT does predate Islam, not sure why this matters?
The Hindu religion probably predates the OT and the OT itself is made up of several different religions.
The OT borrowed heavily from the Egyptian religions and parts of Genesis was lifted almost complete from the Sumerian religions. I remember ages ago visiting the Museum in London because they had a series of grave stones from Egypt on view. It was very interesting to see much of the Book of Proverbs written on those stones, almost word for word.
Muhammad rose from the dead exactly the same way Christ did. Both their teachings are being taught today and that is the only way either of them rose from the dead. Their realities were their teachings. Their teachings rose again after their deaths.
The witnessing of Christ after His death was a spiritual witnessing. An act of faith that Christ lived in His teachings. It got confused with a literal belief along the way and still persists. Muhammad, Moses, Christ and others are all equal. No religion is superior to another.
