It seems you don't know what which religion claims. The "founder" of Christianity is considered by Christians to actually be "God." ( https://en.wikipedia.org/wiki/Trinity ) The "book" in which Muslims believe is by Muslims considered to be the actual words of God, and they negate the claims of both Jews and Christians, these just prepared the ground for Muhammad who is the last one who will ever receive the messages from God. And the messages are accurately recorded by miracle.

My favorite "actual last words" of God from those are where he says (roughly) that the uncle of Mohammad will go to hell and that the wife of the uncle will carry the wood for that fire. (111:1 etc)

Such a natural thing for God to worry to pass to the humanity for ever and ever.

The uncle of Mohammad dared to consider the claims of Mohammad (that he receives the messages of god) as stupidity and dangerous, Sunnah explains.

I'm not making this up.