Ps 58 4Their venom is like the venom of a snake,
like that of a cobra that has stopped its ears,
 5that will not heed the tune of the charmer,
however skillful the enchanter may be.

The question is why do the Psalms teach an attitude of distrust and caution toward rulers? When God placed man in the garden, he was able to rule himself. So God gave each man the gift of ruling over the earth. Man was able to rule without being constrained by God. We must understand that the Bible upholds free will. Gods established the law as the foundation of perfect unity. The practice of the law resulted in the increase of the glory of man. This is why the law does not measure the quality of the action but it is a pronouncing of blessing to those who keep it. At the same time it pronounces a curse upon those who break it. But do not believe that the law has two purposes. It does not pronounce destruction in order to destroy the good that God has made. Rather the curses prevent further destruction because the law is Gods instrument of sovereign preventing. The work of the law in the judgement of God is to separate the wicked from the righteous in order to end the war and punish the guilty. So we can say the the curse of the law in the ultimate sense is shown in earthy wars. God gave nations the responsibility to exercise the curse in declaring a legal war.  The legal war destroys the wicked opposition.

But man was opposed in the garden by the most beautiful and powerful fallen angel. The devil tempted man by an evil curse. Man had never been opposed by violence. We can say that the first temptation by the devil was violent. So the devil ended mans blessed relationship to God and the earth by cursing man. The Psalmist is teaching that the devil became the prince of the air by a violent attack. What was the first violence? It was twisting Gods word.  So  the Devil was the first ruler who unlawful exercised his authority.  Its like the exercise of authority between an adult and a child. The adult explains the conditions of the conduct in order to get the child to comply. God does not exercise His authority in this way toward His creation. Gods word is self attesting it is not an interaction of violence. The Psalmist is teaching that facing temptation is not really giving in because of the pleasure. We are faced with a violent attempt of an assault to our souls. This is why the Psalms are filled with curses.

Our first blessed estate was without opposition or tension. When man sinned he received the violent tension. Sin bought self violence and social violence. Man was made as a free moral creature because he applied the axioms perfectly. But when sin entered the corrupted man applies the axioms with violence. The Psalmist teaching that the violence is our incorrect application of Gods law. God had to respond to the miss application by cursing the violator. This is why the apostle exhorts us to put sin to death. The Psalmist teaches that we must curse all opposition because we live with corrupted desires and in a culture of violence. When we get to the root of temptation we are opposing the desire with the violent curse.

 All communication in relationships is mixed with humanity and violence. Every person gives into temptation because of violence. In this sense we live in world in which the prince and the power of the air is assaulting all sinners. We must be able to dissociate the personal attack of in the violence from the universal struggle with the violence of corruption. We are able to control the violence by cursing the curse. This is why the Psalmist is teaching that with authority comes corrupted applications of the axioms that assault the soul.All authorities are given the position in which they can destroy the lives of a lot of people. And they are put in the position where it is easy to become self serving. They are distant from the people who they rule over. The Psalmist never presents the struggles in this world in the context of the avoidance of pleasure but of destruction and violence.