'Enemies' in the Bible

It happened, when our enemies heard that it was known to us, and God had brought their counsel to nothing, that we returned all of us to the wall, everyone to his work.

Also I said, "The thing that you do is not good. Ought you not to walk in the fear of our God, because of the reproach of the nations our enemies?

Now it happened, when it was reported to Sanballat and Tobiah, and to Geshem the Arabian, and to the rest of our enemies, that I had built the wall, and that there was no breach left therein; (though even to that time I had not set up the doors in the gates;)

It happened, when all our enemies heard [of it], that all the nations that were about us feared, and were much cast down in their own eyes; for they perceived that this work was worked of our God.

But after they had rest, they did evil again before you; therefore left you them in the hand of their enemies, so that they had the dominion over them; yet when they returned, and cried to you, you heard from heaven; and many times you delivered them according to your mercies,