What does communication mean as an essential attribute of Prophethood?
The third attribute of Prophethood is communication of Islamic truths or, in other words, enjoining the good and forbidding the evil. We say Islamic truths because every Prophet came with the same Divine Religion based on submission to God. Communication of this Message was the ultimate reason for sending the Prophets. God manifested His Compassion and Munificence through the mission of the Prophets, which is itself the embodiment of Divine Compassion and Munificence. Just as God shows us a manifestation of His Mercifulness through the warmth and light of the sun, He also manifested His Mercy and Compassion for humankind through His Prophets. He chose the Last Prophet, whom He sent as a mercy for all the worlds, as the one to establish the Message of compassion and mercy eternally. If he had not been sent to revive and revise the Messages of the previous Prophets in such a way as to encompass the whole of humankind, we would all be wandering around in the terrifying desert of unbelief,
