John Gill Commentary 1 Samuel 30:18

"And David recovered all that the Amalekites had taken; and David rescued his two wives." — 1 Samuel 30:18 (ASV)

And David recovered all that the Amalekites had carried away ,
&c.] The wives and children of the Israelites, and their goods, excepting the provisions they had eaten:

and David rescued his two wives ;
which is particularly observed, because a special concern of his.