Prophethood

If Islam’s origin is from prophet Muhammad (s), then what did the other prophets bring?

Question: If Islam’s origin is from Prophet Muhammad (s), then what about the other prophets of our religion,

How can you say that the children of Adam and Eve married between themselves?

Question: I am shocked and have  real difficulty with your answer on this (Marriage between children of Adam &

Did the Holy Prophet (s) have all his knowledge at birth, or did it increase over time?

Question: I was of the impression that the Holy Prophet (s) more or less knew everything from birth.