2 Kings 2:7
And fifty men of the sons of the prophets went and stood in front of them afar off; and the two of them stood by the Jordan.
1 Kings 18:4
for when Jezebel cut off the prophets of the LORD, Obadiah took one hundred prophets and hid them in groups of fifty in caves and sustained them with bread and water.)
1 Kings 18:13
Was it not told my lord what I did when Jezebel slew the prophets of the LORD, how I hid one hundred men of the LORD's prophets in groups of fifty in caves and sustained them with bread and water?
2 Kings 2:17
But when they urged him until he was ashamed, he said, Send. They sent therefore fifty men, and they sought him three days, but did not find him.