Although only twenty-five prophets are mentioned by name in the Quran, a hadith (no. 21257 in "Musnad Ahmad ibn Hanbal") mentions that there were (more or less) 124,000 prophets in total throughout history. Other traditions place the number of prophets at 224,000. Some scholars hold that there are an even greater number in the history of mankind, and only God knows. The Quran says that God has sent a prophet to every group of people throughout time, and that Muhammad is the last of the prophets, sent for the whole of humankind. The message of all the prophets is believed to be the same. In Islam, all prophetic messengers are prophets (such as Adam, Noah, Abraham, Moses, Jesus, and Muhammad) though not all prophets are prophetic messengers. The primary distinction is that a prophet is required to demonstrate God's law through his actions, character, and behavior without necessarily calling people to follow him, while a prophetic messenger is required to pronounce God's law (i.e. revelation) and call his people to submit and follow him. Muhammad is distinguished from the rest of the prophetic messengers and prophets in that he was commissioned by God to be the prophetic messenger to all of mankind. Many of these prophets are also found in the texts of Judaism (The Torah, the Prophets, and the Writings) and Christianity.