I will praise you, O LORD , with all my heart;
I will tell of all your wonders.
I will be glad and rejoice in you;
I will sing praise to your name, O Most High.
Gods government is established on the earth. It was established when He created  the world. If there was another government that could prosper on this earth then we would need to set aside Gods word. Any creation on this earth is only put into existence by words. If there was anything that existed that could not be defined then that is a contradiction. If any government could be established without the jurisdiction of Gods word then God would cease to be God. If the word does not establish authority then it is not to be trusted. So God gave the axioms to overturn and establish His kingdom on  the earth. Christ came and pronounced the law, covenants, curses, statutes ,promises and decrees in establishing the kingdom of God. He took His seat in heaven after He put all things under His feet.

The Psalmist heart is enlarged as He pronounces the axioms. He is enlarged because the Most High in the universe has established the axioms as the authority over all other words. The Psalmist is putting the axioms or praises in songs to the Most High. When we rejoice in God we are establishing His kingdom on this earth. The Psalmist describes the activity of the axioms as he rules the world.

 3My enemies turn back;
they stumble and perish before you.
 4For you have upheld my right and my cause;
you have sat on your throne, judging righteously.
5You have rebuked the nations and destroyed the wicked;
you have blotted out their name for ever and ever.
6Endless ruin has overtaken the enemy,
you have uprooted their cities;
even the memory of them has perished.

God has no authority unless He re establishes the creation covenant that brought about the curse upon the creation. So God had to curse the creation in order to turn the world upside down so that He could reestablish His kingdom through the death of the old and resurrection of the new. God renews all things. In order to renew all things God must overturn all the governments on this earth. If Gods covenants word was not kept then it would be overthrown by the world governments. Gods word is not just a religious word.It establishes Gods government on the earth. It must no be overthrown by anything.

  The LORD reigns forever;
he has established his throne for judgment.
He will judge the world in righteousness;
he will govern the peoples with justice.
The LORD is a refuge for the oppressed,
a stronghold in times of trouble.
  Those who know your name will trust in you,
for you, LORD , have never forsaken those who seek you.

In order for the king to have authority it must be given in Gods axioms. If the axioms did not overrule all other authority then God would cease to be God. So David is establishing the authority of God through His absolute word. If any of the axioms failed to accomplish their pronouncements then the Psalmist would have no divine right to rule over Gods Nation. In one part the axioms pronounce blessing on Gods covenant people and the other part God overturns the nations. Both of the blessing and the cursing are praise worthy. To bless God is to curse the wicked curse. As David has expressed absolute authority over the earth so God is authoritative in the axioms.If God was absolutlely righteous, He must not lower that standard at any time. Then God would cease to be just. God is righteous because He is perfect in judging all thoughts and intents of the heart. If He did not pronouce the justice then He would not be God.

 Sing praises to the LORD , enthroned in Zion;
proclaim among the nations what he has done.
  For he who avenges blood remembers;
he does not ignore the cry of the afflicted.

In order for God to be just He must choose some people for blessing and others for cursing before the creation of  the earth. If anything was not morally liable then that would not exist by Gods moral decisions. Then that thing would exist as equal with Gods will. God must avenge His own choice from eternity past. Gods curses were established before  the creation of the world. We are only avenging what God has decided in eternity past.

O LORD , see how my enemies persecute me!
Have mercy and lift me up from the gates of death,
  that I may declare your praises
in the gates of the Daughter of Zion
and there rejoice in your salvation.
The Psalmist speaks Gods axioms and speaks in absolute terms about the outcome of His enemies. Gods word must be righteous at all times. If the Psalmist pronounces judgement upon His enemies then in order for God to be authoritative His word must destroy all of His enemies. In order to trust God , the His word must have absolute authority.

 The nations have fallen into the pit they have dug;
their feet are caught in the net they have hidden.
The LORD is known by his justice;
the wicked are ensnared by the work of their hands.
Higgaion.  Selah
The wicked return to the grave, 
all the nations that forget God.
  But the needy will not always be forgotten,
nor the hope of the afflicted ever perish.

If Gods word is to be trusted it must be spoken as a timeless judgement. If God is God then He must decide the outcome before the creation of the world. Then His decision can be spoken over all of time. If any enemy could survive in time then Gods word is no longer infallible.

 Arise, O LORD , let not man triumph;
let the nations be judged in your presence.
Strike them with terror, O LORD ;
let the nations know they are but men.
Selah
God had to be just in pronouncing blessing and cursing in eternity past. He had to curse men who are their own gods. To be our own god is to destroy the world. God is perfectly just in pronouncing a curse in order to keep men from destroying  the world by becoming their own god. God must make all men just men.