'Adversary' in the Bible

Be gracious to me, O God, for man has trampled on me;All day long the adversary oppresses and torments me.

Give us help against the enemy,For the help of man is worthless (ineffectual, without purpose).

For You have been a shelter and a refuge for me,A strong tower against the enemy.

O God, how long will the adversary scoff?Is the enemy to revile Your name forever?

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

Give us help against the adversary,For deliverance by man is in vain [a worthless hope].

You [my enemy] pushed me violently so that I was falling,But the Lord helped me.