C. F. Keil and Franz Delitzsch on 1 Samuel 17:16-17

1Sa 17:16-17

The Philistine drew near (to the Israelitish ranks) morning and evening, and stationed himself for forty days (in front of them). This remark continues the description of Goliath’s appearance, and introduces the account which follows. Whilst the Philistine was coming out every day for forty days long with his challenge to single combat, Jesse sent his son David into the camp. “Take now for thy brethren this ephah of parched grains (see Lev 23:13), and these ten loaves, and bring them quickly into the camp to thy brethren.”