Albert Barnes Commentary Psalms 103:6

"Jehovah executeth righteous acts, And judgments for all that are oppressed." — Psalms 103:6 (ASV)

The Lord executes righteousness and judgment - That is, “justice.” He sees that justice is done to the oppressed. He is on their side. His law, his commands, his judicial decisions, his providential interpositions, are in their favor.

This does not mean that it will be done at once; or that there will never be any delay; or that they may not suffer even for a long time—for this occurs in fact; but the meaning is that God has their true interest at heart; that at proper times, and whenever and wherever there are any dealings of his in the case, his acts are in favor of those that are oppressed; and that there will be, sooner or later, such interpositions in their behalf as shall entirely vindicate their cause.

For all that are oppressed - By harsh laws; by unjust governments; by slavery; by unrighteous decisions in courts; by the pride and power of wicked people. Compare the notes at Isaiah 1:17, notes at Isaiah 1:23-27.