2 Kings 20
2. (30) At this time it was that the dominion of the Assyrians was overthrown by the Medes; but of these things I shall treat elsewhere. But the king of Babylon, whose name was Baladan, sent ambassadors to Hezekiah with presents, and desired he would be his ally and his friend. (31) So he received the ambassadors gladly, and made them a feast, and showed them his treasures, and his armory, and the other wealth he was possessed of, in precious stones, and in gold, and gave them presents to be carried to Baladan, and sent them back to him.
“An inscription in cursive Hebrew of the early eighth century B.C. details the work:” ‘When (the tunnel) was driven through while (the quarrymen were swinging their) axes, each man towards the other and, while there was still 3 cubits to be cut through (there was heard) the voice of a man calling to his fellow, for there was a crevice (?) on the right … and when the tunnel was (finally) driven through, the quarrymen hewed each towards the others, axe against axe. Then the waters flowed from the Spring to the Pool for 1,200 cubits and the height of the rock above the head(s) of the quarrymen was 100 cubits.’ ” (Wiseman)