'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 require of the king a band of soldiers and horsemen to help us against the enemy in the way: because we had spoken unto the king, saying, The hand of our God is upon all them for good that seek him; but his power and his wrath is against all them that forsake him.

Then we departed from the river of Ahava on the twelfth day of the first month, to go unto Jerusalem: and the hand of our God was upon us, and he delivered us from the hand of the enemy, and of such as lay in wait by the way.