'Adversary' in the Bible

Then saith Jesus to him, 'Go -- Adversary, for it hath been written, The Lord thy God thou shalt bow to, and Him only thou shalt serve.'

Agree with thine adversary quickly, whiles thou art in the way with him; lest at any time the adversary deliver thee to the judge, and the judge deliver thee to the officer, and thou be cast into prison.

and if the Adversary doth cast out the Adversary, against himself he was divided, how then doth his kingdom stand?

and he having turned, said to Peter, 'Get thee behind me, adversary! thou art a stumbling-block to me, for thou dost not mind the things of God, but the things of men.'