'Enemy' in the Bible

Then the Lord showed me four craftsmen.

For prior to those days neither man nor beast had wages. There was no safety from the enemy for anyone who came or went, for I turned everyone against his neighbor.

“They will be as mighty men,Treading down the enemy in the mire of the streets in battle;And they will fight, for the Lord will be with them;And the riders on horses will be put to shame.

For I will no longer have pity on the inhabitants of the land,” declares the Lord; “but behold, I will cause the men to fall, each into the hand of another and into the hands of his [foreign] king. And the enemy will strike the land, and I will not rescue the people from their hand.”