Several prominent exponents of the Fatimid Ismaili Imams explained that throughout history there have been six enunciators ("natiqs") who brought the exoteric ("zahir") revelation to humans, namely: Adam, Noah, Abraham, Moses, Jesus and Muhammad. They speak of a seventh enunciator ("natiq"), the Resurrector (Qa’im), who will unveil the esoteric ("batin") meaning of all the previous revelations. He is believed to be the pinnacle and purpose of creation. The enunciators (sing. "natiq") who are the Prophets and the Imams in their respective times, are the highest hierarch ("hadd"). The enunciators ("natiqs") signal the beginning of a new age ("dawr") in humankind, whereas the Imams unveil and present the esoteric ("batin") meaning of the revelation to the people. These individuals are both known as the ‘Lord of the Age’ ("sahib al-’asr") or the ‘Lord of the Time’ ("sahib al-zaman"). Through them, one can know God, and their invitation to humans to recognize God is called the invitation ("da’wa").