It is remarkable that the epithet “uncircumcised,” used as a term of reproach, is confined almost exclusively to the Philistines. (Compare 1 Samuel 17:26, 1 Samuel 17:36; Judges 14:3; Judges 15:18, etc.) This is probably an indication of the long oppression of the Israelites by the Philistines and of their frequent wars.
Related Commentaries of 1 Samuel 14:6
1 Samuel 14:6
6 And Jonathan said to the young man that bare his armour, Come, and let us go over unto the garrison of these uncircumcised: it may be that the LORD will work for us: for there is no restraint to the LORD to save by many or by few.