'Enemy' in the Bible

But the eye of their God was on the elders of the Jews, so they [Tattenai and the others] did not stop them until a report could come before Darius, and then an answer was returned by letter concerning it.

For I was ashamed to request troops and horsemen from the king to protect us from the enemy along the way, because we had told the king, “The hand of our God is favorable toward all those who seek Him, but His power and His anger are against all those who abandon (turn away from) Him.”

We set out from the river Ahava on the twelfth [day] of the first month to go to Jerusalem; and the hand of our God was upon us, and He rescued us from the hand of the enemy and those who lay in ambushes along the way.