Jeremiah 38:9 (KJV)

Now when Ebed–melech the Ethiopian, one of the eunuchs which was in the king’s house, heard that they had put Jeremiah in the dungeon; the king then sitting in the gate of Benjamin;

Ebed–melech went forth out of the king’s house, and spake to the king, saying,

My lord the king, these men have done evil in all that they have done to Jeremiah the prophet, whom they have cast into the dungeon; and he is like to die for hunger in the place where he is: for there is no more bread in the city.

Then the king commanded Ebed–melech the Ethiopian, saying, Take from hence thirty men with thee, and take up Jeremiah the prophet out of the dungeon, before he die.

So Ebed–melech took the men with him, and went into the house of the king under the treasury, and took thence old cast clouts and old rotten rags, and let them down by cords into the dungeon to Jeremiah.