John Calvin Commentary Psalms 71:4

"Rescue me, O my God, out of the hand of the wicked, Out of the hand of the unrighteous and cruel man." — Psalms 71:4 (ASV)

O my God! deliver me from the hand of the wicked man. Here he uses the singular number; but he is not to be understood as indicating one man only. It is highly probable that he includes the whole host of the enemies who assaulted him. We have observed elsewhere how greatly it contributes to our confidence in obtaining our requests when we are so assured of our own integrity that we can freely complain before God that we are unjustly and wickedly assaulted by our enemies. For we ought not to doubt that God, who has promised to be the defender of those who are unjustly oppressed, will, in that case, undertake our cause.