i.e. In a posture and readiness to fight with them; as it is explained, 1 Samuel 17:20,21. Men are oft said in Scripture to do what they intend and are prepared to do, as hath been showed formerly by instances.
Related Commentaries of 1 Samuel 17:19
1 Samuel 17:19
19 Now Saul, and they, and all the men of Israel, were in the valley of Elah, fighting with the Philistines.