Before King David's conquest of Jerusalem in the 10th century BC the city was known as Jebus and the home of the Jebusites. The Bible describes the city as heavily fortified with a strong city wall but not much is known about it.
King Solomon extended the city walls. In about 440 BCE, under the Persian period, Nehemiah arrived from Babylon and rebuilt them.
In 41-44 Agrippa, king of Judea, built a new city wall known as the "Third Wall".
In 135, after Emperor Hadrian's total destruction of Jerusalem and renaiming it to Aelia Capitolina he rebuilt the walls.
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