2 Kings 2:7
And fifty men of the sons of the prophets went, and stood to view afar off: and they two stood by Jordan.
Cross-reference
In 2 Kings 2:17, these same fifty sons of the prophets later search for Elijah, not knowing he has been taken.
In 2 Kings 2:3, the prophets at Bethel know Elijah will be taken today — these fifty men are likely from that company, witnessing fulfillment.
In 2 Kings 2:15, these same fifty prophets from Jericho see Elisha and declare the spirit of Elijah rests on him — they are the witnesses from verse 7.
In Revelation 11:12, enemies watch the two witnesses ascend to heaven — parallel to these fifty men watching Elijah's ascension from a distance.
In 1 Kings 20:35, the same 'company of the prophets' appears, identifying the group that witnesses Elijah's miracle here.
In Amos 7:14, Amos denies being a 'son of a prophet' — contrasting with the prophetic guild here, highlighting that not all prophets belong to such schools.