Psalms 9:4

For thou hast maintained my right and my cause; thou satest in the throne judging right.

God upholds the speaker's right and maintains his cause, taking His seat upon the throne to judge with justice. His judgment is righteous, vindicating those who trust in Him against their adversaries. The throne is the place of right decision, where wrongs are set right and the faithful are defended.

That defense includes the overthrow of enemies who rise against His people. This overthrow and deliverance will find literal fulfillment in the troublous times just before the end. Then what the verse declares about divine vindication will be seen in actual events.