1 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
18:4For it was so, when Jezebel cut off the prophets of the LORD, that Obadiah took an hundred prophets, and hid them by fifty in a cave, and fed them with bread and water.)
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.