The Psalmist is teaching we are intimately related to God by the creation covenant. God has created and orders all things to save His elect. The unique anger that God displays is towards those who are not part of His kingdom. God has adopted us into a stable  family with the guaranteed security of a Father. He orders all dishonorable things for our  preservation and His everlasting glory. God's controlled anger is typically displayed in the cursing of the wicked.

 In Psalm 4 he is teaching us how to deal appropriately with our personal anger. Our anger is like God's controlled anger. As God sufficiently established and orders all things for our productive good so we too react with anger when the wicked redefine God's law and make idols out of creation. They overturn God's purpose in our pleasure of ruling over the created things plotting evil by re-imaging them. They subject people to bondage.

 When man sinned God curse the magnificent creation. The curse spoke eternal condemnation to lawbreakers. The curse was the effective instrument God used to properly direct eternal anger. God killed the determined opposition to His peaceable kingdom by cursing the creation. The sole hope of re-establishing the relationship with God was through slaughter and death. God executed a sacrifice as an instrument to amply avenge the wicked who resurrects the power of death. In making idols out of lifeless things, they intentionally attempt to kill God and the saints.

 In your anger slaughter the animal sacrifice. We must implement the law to silence the considerable opposition. We lose control when we painstakingly build a pragmatic system of mutual threats and intentional violence. Because divine vengeance is God's fulfilled curse! The Psalmist deals with anger by cursing the wicked. Without the curse, we are in danger of exterminating the human race. Everything we possess is transferred according to His own goodness. The psalmist complains about troubles in the context of God's Fatherly care in the house of God's creation. God's anger is the appropriate display of His curse evidenced in protecting the saints reordering the creation for their good.

 God's law is not a practical instrument of grading. His law is perfect and absolutely just at all times. It is the formidable instrument of cursing and blessing. We face trials in this life surrounded by the creation in which God's curse is present in the work of the law. The Psalmist is constantly complaining to God when he is encountering the destructive force of the curse as the consequences of God's judgment of the world.