Muhammad was chosen by God to deliver His Message of Peace, namely Islam. He was born in 570 C.E. (Common Era) in Makkah, Arabia. He was entrusted with the Message of Islam when he was at the age of forty years. The revelation that he received is called the Quran, while the message is called Islam.
Muhammad is the very last Prophet of God to mankind. He is the final Messenger of God. His message was and still is to all of mankind, including the Christians and Jews. He was sent to those religious people to inform them about the true mission of Jesus, Moses, David, Jacob, Isaac and Abraham.
Muhammad is considered to be the summation and culmination of all the prophets and messengers that came before him. He purified the previous messages from adulteration and completed the Message of God for all humanity. He was entrusted with the power of explaining, interpreting and living the teachings of the Quran.