Shared ground
These lines present God as the decisive source of what enables ongoing generosity. The explicit claim is that God is “able” to make “all grace” overflow so that there is “always” “all sufficiency” “in everything,” with the stated result that believers “abound to every good work” (v.8). Paul then treats a Psalm as supporting evidence: a person who gives broadly to the poor is described as having a “righteousness” that “remains forever” (v.9).
The passage also assumes that generosity can be sustained rather than reckless. In context, Paul is discussing a real monetary collection, so “good work” includes material giving, even if the wording reaches beyond this one project.
Where interpretation differs
Some disagreement centers on what “all grace” covers. One reading takes it mainly as material provision (money, resources) because the immediate context is giving to meet needs. Another reading takes it more broadly as God’s help in many forms (resources, opportunities, motivation, community support), with material provision included but not the whole idea.
A second question is how strong “all sufficiency in everything” is meant to be. Some think it points to having enough for needs (stability, not luxury). Others think the language suggests real surplus that can be redistributed.
A third question is what “his righteousness remains forever” means in the Psalm quotation. Some take “righteousness” to mean a lasting reputation and remembered rightness of the generous person’s action. Others think it also gestures toward God’s lasting approval of that person’s right standing expressed through generosity.
Why the disagreement exists
The key phrases (“all grace,” “all sufficiency,” “righteousness remains forever”) are broad, and Paul stacks “all/always/everything,” which can sound absolute. But the larger section is about a specific act of financial help, which pulls interpretation toward concrete provision. The Psalm line itself can naturally be read either as enduring moral significance in the community’s memory or as enduring standing before God, so readers weigh context and wording differently.
What this passage clearly contributes
Paul ties generosity to God’s enabling provision: God supplies in a way that aims at steady sufficiency, and that sufficiency supports continued “good work” (explicit in v.8). He also frames giving to the poor as enduringly significant by citing Scripture (explicit in v.9). Theological inferences may extend this to broader accounts of how God’s gifts empower ethical action, but the text’s clear thrust is that God’s generosity underwrites sustainable human generosity, especially toward the needy (anchored in Paul’s collection context; cf. 2 Corinthians 9:6–9:7).