2 Kings 18:17

17And the king of Assyria sent the aTartan, the Rab-saris, and the Rabshakeh with a great army from Lachish to King Hezekiah at Jerusalem. And they went up and came to Jerusalem. When they arrived, they came and stood by bthe conduit of the upper pool, which is on the highway to the Washer’s Field.

Isaiah 36:2

2 cAnd the king of Assyria sent the Rabshakeh
 Rabshakeh is the title of a high-ranking Assyrian military officer
from eLachish to King Hezekiah at Jerusalem, with a great army. And he stood fby the conduit of the upper pool on the highway to the Washer’s Field.
Copyright information for ESV