Shared ground
Psalm 103:6–7 ties praise to God’s visible track record. The text explicitly claims that Yahweh does what is right and brings justice on behalf of people who are oppressed (v.6). It also explicitly claims that Yahweh did not stay hidden: he made his “ways” known to Moses and made his “deeds” known to the people of Israel (v.7).
Together, the verses link two themes: public justice and public memory. God’s actions toward the oppressed are presented as real events in the world, and God’s self-disclosure is presented as something taught to a leader (Moses) and witnessed by a community (Israel).
Where interpretation differs
One question is how broad “all who are oppressed” is meant to be. Some read it as a universal statement about how Yahweh acts toward any oppressed people, in any place. Others read it as a general truth stated from within Israel’s story, with the focus primarily on Israel’s oppressed (especially given the immediate move to Moses and Israel in v.7).
A second question is how to distinguish “ways” and “deeds.” Many read “ways” as God’s patterns/character and guidance shown to Moses, while “deeds” are the concrete acts Israel experienced and remembered. Others take the terms as largely overlapping, with the two lines mainly emphasizing that God made himself known both through instruction and through events.
Why the disagreement exists
The wording in v.6 is broad (“all who are oppressed”), but v.7 anchors the claim in Israel’s shared story (Moses; the children of Israel). Interpreters weigh that tension differently. Similarly, Hebrew poetry often uses parallel lines that can be either closely synonymous or more sharply distinguished, which affects how “ways” (ways) and “deeds” are understood.
What this passage clearly contributes
These verses contribute a concrete portrait of Yahweh: he is portrayed as an active agent of right and justice, especially for people being mistreated (explicit claim), and as a God who makes his character and actions knowable in history (explicit claim). It also suggests (inference) that God’s justice is not random but consistent with knowable “ways,” and that Israel’s faith memory is rooted in public events and communicated tradition, not only private experience.