'Adversary' in the Bible

Indeed," says the Lord, "captives will be taken from a warrior; spoils will be rescued from a conqueror. I will oppose your adversary and I will rescue your children.

He is near that justifieth me; who will contend with me? let us stand together: who is mine adversary? let him come near to me.

And they fear from the west the name of Jehovah, And from the rising of the sun -- His honour, When come in as a flood doth an adversary, The Spirit of Jehovah hath raised an ensign against him.

In all their distress He is no adversary, And the messenger of His presence saved them, In His love and in His pity He redeemed them, And He doth lift them up, And beareth them all the days of old.