So David went, he and the six hundred men that were with him, and came to the brook Besor, where those that were left behind stayed.
All Commentaries on 1 Samuel 30:9 Go To 1 Samuel 30
George Leo Haydock
AD 1849
Besor is formed by the water falling from the mountains of Idumea, and discharges itself into the Mediterranean, below Gaza. (Calmet)
Some take it to be the torrent of the desert, or the river of Egypt. Adrichomius makes it run from the mountains of Juda, so as to form the southern boundary of the tribe of Simeon. (Haydock)