'Adversary' in the Bible

If I have rewarded evil to my friend,Or have plundered him who without cause was my adversary,

You cause us to turn back from the adversary;And those who hate us have taken spoil for themselves.

O give us help against the adversary,For deliverance by man is in vain.

How long, O God, will the adversary revile,And the enemy spurn Your name forever?

They did not remember His power,The day when He redeemed them from the adversary,

And gave up His strength to captivityAnd His glory into the hand of the adversary.

Let the redeemed of the Lord say so,Whom He has redeemed from the hand of the adversary

Oh give us help against the adversary,For deliverance by man is in vain.