In Scripture, only here (50:1) and in Joshua 22:22 does the appellation “the Mighty One, God, the Lord” appear—an appropriate introduction to a psalm about the power, majesty, and judgment of God. Asaph discusses how to please such a terrifying God, who reigns among his people (50:2–3; cf. 48:4–8). He observes that God’s judgment categorizes people into two groups (cf.…