When the king of Babylon's army fought against Jerusalem, and against all the cities of Judah that were left,
against Lachish, and against Azekah:
for these defenced cities remained of the cities of Judah.
Jeremiah 34:7
"Haaretz reported that one piece of supporting evidence found on the 2,500 year old ostraca references the biblical book of Jeremiah:“Even more gripping is the tale told by perhaps the most known ostracon from the period, which was found in Lachish, the largest Judahite town after Jerusalem. In the dispatch, an official stationed outside the city reports to his commander on the fall of a nearby stronghold, saying that ‘we can see the signals from Lachish, but we no longer see Azekah.’
“Scholars have taken this as a confirmation of the biblical narrative of Jeremiah, which recounts that Azekah and Lachish were the last fortresses of Judah to fall before Jerusalem was besieged and destroyed by the Babylonian king Nebuchadnezzar II.” MO