The Ten Lost Tribes were those from the Twelve Tribes of Israel that were said to have been exiled from the Kingdom of Israel after it was conquered by the Neo-Assyrian Empire around 720 BCE. They were the following tribes: Reuben, Simeon, Dan, Naphtali, Gad, Asher, Issachar, Zebulun, Manasseh, and Ephraim – all but Judah and Benjamin, both of which were based in the neighbouring Kingdom of Judah, and therefore survived until the Babylonian siege of Jerusalem in 587 BCE. Alongside Judah and Benjamin was part of the Tribe of Levi, which was not allowed land tenure, but received dedicated cities. The exile of Israel's population, known as the Assyrian captivity, was an instance of the long-standing resettlement policy of the Neo-Assyrian Empire implemented in many subjugated territories.
The Jewish historian Josephus wrote that "there are but two tribes in Asia and Europe subject to the Romans, while the ten tribes are beyond Euphrates till now, and are an immense multitude, and not to be estimated by numbers." In the 7th and 8th centuries CE, the return of the Ten Lost Tribes was associated with the concept of the coming of the Hebrew Messiah. Claims of descent from the "lost tribes" have been proposed in relation to many groups, and some Abrahamic religions espouse a messianic view that Israel's tribes will return.
