Charles Ellicott Commentary 2 Kings 2:7

"And fifty men of the sons of the prophets went, and stood over against them afar off: and they two stood by the Jordan." — 2 Kings 2:7 (ASV)

And fifty ... went. — Now fifty ... had gone.

Stood to view. — Taken their stand opposite, i.e., directly opposite the place where the two were standing by the brink of the river, yet at some distance behind. They wished to see whether and how the companions would cross the stream at a point where there was no ford.