Isaiah 36:4

Now in the fourteenth year of King Hezekiah, Sennacherib king of Assyria came up against all the fortified cities of Judah and seized them.

After these acts of faithfulness Sennacherib king of Assyria came and invaded Judah and encamped against the fortified cities, and thought to break into them for himself.

And the king of Assyria sent Rabshakeh from Lachish to Jerusalem to King Hezekiah with a heavy military force. And he stood by the conduit of the upper pool on the highway of the fuller’s field.