So David went, he and the 600 men with him, and came to the Wadi Besor, where those left behind remained—
All his servants passed on beside him: all the Cherethites, all the Pelethites and all the Gittites—600 men that had come after him from Gath—passed on before the king.
David also brought up his men that were with him, each with his household, and they settled in the towns of Hebron.
So David rose and crossed over, he and the 600 men that were with him, to Achish son of Maoch, king of Gath.
for 200 men stayed behind because they were too exhausted to cross Wadi Besor. Yet David pursued, he and the other 400 men.