Psalms 94:1
1LORD, you God to whom vengeance belongs, you God to whom vengeance belongs, shine out.
O Lord, God of vengeance, shine forth! Double title; plea that the Avenger appear. The plain cry stands—ask the just God to show himself, not private revenge dressed as piety.
Calvin: God of vengeances—titles fit the situation; shine forth means some actual manifestation as judge. Not that God needs reminding; the faithful embolden themselves to vehement prayer. When wicked indulge excesses, remember he never ceases to be judge of the earth.
Shine forth, God of vengeance. Retributive justice, not a vindictive spirit; put up the Spirit-taught prayer when he seems hidden.