Fifty men of the sons of the prophets - We see by this how large were the prophetical schools. It is implied that the “fifty” were only a portion of the school of Jericho. They ascended the abrupt heights behind the town, from where they would command a view of the whole course of the river and of the opposite bank for many miles.
Related Commentaries of 2 Kings 2:7
2 Kings 2:7
7 And fifty men of the sons of the prophets went, and stood to viewa afar off: and they two stood by Jordan.