'Enemies' in the Bible

Come on, let us deal wisely with them, lest they multiply, and it come to pass that, if war occur, they take side with our enemies and fight against us, and go up out of the land.

But if thou shalt diligently hearken unto his voice, and do all that I shall say, then I will be an enemy to thine enemies, and an adversary to thine adversaries.

I will send my fear before thee, and confound every people to which thou comest, and will make all thine enemies turn their back to thee.