 Many also fled south to Jerusalem, which appears to have expanded in size fivefold during this period, requiring a new wall to be built, and a new source of water (Siloam) to be provided by King Hezekiah.Furthermore, explicitly mentions northern Israelites who had been spared by the Assyrians—in particular, members of Dan, Ephraim, Manasseh, Asher, and Zebulun—and how members of the latter three returned to worship at the Temple in Jerusalem at that time.The Hebrew Bible does not use the phrase "ten lost tribes", leading some to question the number of tribes involved.