'Adversary' in the Bible

for we are sold, I and my people, to be destroyed, to be slain, and to perish. But if we had been sold for bondmen and bondwomen, I had held my tongue, although the adversary could not compensate the king's damage.

And Esther said, The adversary and enemy is this wicked Haman. Then Haman was terrified before the king and the queen.