Saul had come from Michmash to Gilgal, expecting to gather the force of the whole nation around him. Instead of that, the people fled, leaving him in the exposed plain with only 600 men 1 Samuel 13:15. The Philistines occupied Michmash, and might at any moment pour down the valley upon Gilgal. Saul’s situation was obviously one of extreme peril. A few hours’ delay might prove fatal to him and his little army. Hence, he “forced” himself, etc.
Related Commentaries of 1 Samuel 13:11
1 Samuel 13:11
11 And Samuel said, What hast thou done? And Saul said, Because I saw that the people were scattered from me, and that thou camest not within the days appointed, and that the Philistines gathered themselves together at Michmash;