Shared ground
Psalm 15:5 finishes the psalm’s answer to who can “dwell” in God’s presence by naming two pressure points: money and justice. The faithful person refuses to use to profit from another person’s hardship (“usury”), and refuses to accept payment that would twist legal outcomes “against the innocent.” Those are explicit claims in the verse.
The last line is also explicit: the person who “does these things” (the whole pattern in Psalm 15, not only verse 5) “shall never be shaken.” The verse presents integrity—especially around money—as a key measure of whether someone is fit for life near God, and it links that integrity with lasting stability.
Where interpretation differs
What “usury” means here. Some read it as a ban on charging any interest at all. Others read it as a ban on exploitative interest—profit made from a neighbor’s crisis—while allowing fair interest in other settings.
What “never be shaken” refers to. Some take it mainly as social and life stability (not being toppled by upheaval). Others hear a stronger idea: enduring standing before God as the psalm’s opening question frames the whole list (Ps 15:1).
Why the disagreement exists
The verse uses compact, everyday terms without spelling out edge cases. “Usury” can mean ordinary interest in some contexts, but it can also point to predatory lending, especially in a setting where loans often followed famine, illness, or debt. Likewise, “never be shaken” is a strong phrase that can describe either outward security or inward/relational permanence, and Psalm 15’s “who may dwell” frame pulls interpreters toward the larger spiritual meaning.
What this passage clearly contributes
Psalm 15:5 treats financial practice and courtroom honesty as revealing tests of integrity: refusal to profit from need, and refusal to sell justice. It closes the whole psalm with a summary assurance: the person who lives out the described integrity will not be destabilized. The text itself ties stability to the whole set of behaviors, not to one isolated act.