Jeremiah 38
6 Ref So they took Jeremiah and put him into the water-hole of Malchiah, the king's son, in the place of the armed watchmen: and they let Jeremiah down with cords. And in the hole there was no water, but wet earth: and Jeremiah went down into the wet earth.
7 Ref Now it came to the ears of Ebed-melech the Ethiopian, an unsexed servant in the king's house, that they had put Jeremiah into the water-hole; the king at that time being seated in the doorway of Benjamin: