1 Chronicles 12:15

When it had overflown. — A proof of their valour. They did not wait till summer had made the Jordan shallow, but crossed it in spring, when perilously swollen with the rains and the melted snows of Lebanon. (Comp. Joshua 3:15.)

In the first month, — March — April; in Heb, A bib or Nisan.

Had overflown. — Was fillıng or brimming over.

And they put to flight all... the valleys. — Literally, and they made all the valleys flee: that is, their inhabitants, who were hostile to their enterprise, both to the sunrise and the sunset, or on both sides of the river.