16 Yahveh is King forever and ever; the nations will be destroyed from his land. 17 Yahveh, you have heard what the humble are asking; you will strengthen their hearts. You will listen carefully, 18 doing justice for the fatherless and the exploited so that mere humans from the land may terrorize them no more.
The psalmist ends his prayer for God to help those being exploited by the powerful with the assurance that God has heard. God will bring justice, which— in this case— will mean wiping out the oppression. He will stop the exploitation by destroying the exploiters.
Some people have such power and influence that it will take an act of God to bring them down. God acts.