All miserable men are silenced before God because He does not lower His arbitrary justice to act redemptive. Since the wicked become rich in this created the world by grand theft God must always be justified in His justified response. The Psalmist is not saying that God's divine justice is mysterious. Rather this presiding justice has been divinely revealed in the exact words that the criminal world endure no personal time for. You see the Psalmist is responding generously to the desperate plight of God's oppressed nation who must ill endure the cruel injustice of the oppressive world. The wicked curse God by contemptuously ignoring the axioms. In cursing God they are aggressively moderated in the righteous pronouncements. As God's people pronounce the eternal curses, they are efficiently storing up divine wrath for the wicked. Gods people are innocent victims of the grand theft of the wicked. 

God has developed all things to govern the earth by graciously providing for all of man's needs. Free God has generously provided man the freedom to rule the earth through His words. Instead of properly pronouncing God's ruling ability the wicked use God's generous gifts in an unjust way. Because God dominates the world through operative word of creation, He has reestablished man's executive authority in pronouncing His divine justice in the moral law and curses. The Psalmist is ruling over the wicked in this authoritative pronouncement.