Now it fell on a day, that Jonathan the son of Saul said to the young man who bore his armor, Come, and let us go over to the Philistines' garrison, that is on yonder side. But he didn't tell his father.
"Let us go over to the Philistine garrison"  (1 Samuel 14:1).  The author interrupted these words of Jonathan to describe the overall situation and scene of the event to be related.  Jonathan's words are resumed in  1 Samuel 14:6.