The prophets were sent on this Earth for a purpose. That was to call every one towards the one who created the entire creation. To call everyone towards the one who hears all. The one who sees all. The one who forgives. The most important message was to worship Allah alone and to follow his teachings. All of them, Adam, Nuh, Ibrahim, Ishaaq, Ismail, Musa, Haarun, Dawood, Sulaymaan, Isa, Muhammad, and others invited people to worship Allah alone and not to pray to idols and other false gods. All of the prophets were an example to lead moral, righteous, purpose-driven lives free of doubts and confusions. 