23 Now a detachment of Philistines had gone out to the pass at Mikmash.

Read 1 Samuel 13:23 Using Other Translations

And the garrison of the Philistines went out to the passage of Michmash.
And the garrison of the Philistines went out to the pass of Michmash.
The pass at Micmash had meanwhile been secured by a contingent of the Philistine army.