'Enemy' in the Bible

And if ye go to war in your land against the enemy that oppresseth you, then ye shall blow an alarm with the trumpets; and ye shall be remembered before the LORD your God, and ye shall be saved from your enemies.

God brought him out of Egypt;He is like the horns of a wild ox for them.He will feed on enemy nationsand gnaw their bones;he will strike them with his arrows.

Or with any stone, wherewith a man may die, seeing him not, and cast it upon him, that he die, and was not his enemy, neither sought his harm: