What is rhetorically distinctive about the address in “ولو ترى إذ المجرمون ناكسوا رؤوسهم”?

The Subject of Predication: Omission, Mention and Modes of Identification

• It is merely morphological inflection
• It invites any imagined observer to visualize the scene
• The singular always addresses exactly one named person
• It has no addressee