4 In your majesty ride forth victoriously in the cause of truth, humility and justice; let your right hand achieve awesome deeds.

Read Psalm 45:4 Using Other Translations

And in thy majesty ride prosperously because of truth and meekness and righteousness; and thy right hand shall teach thee terrible things.
In your majesty ride out victoriously for the cause of truth and meekness and righteousness; let your right hand teach you awesome deeds!
In your majesty, ride out to victory, defending truth, humility, and justice. Go forth to perform awe-inspiring deeds!