Shared ground
Paul ends the collection section by redirecting attention to God: “Thanks be to God” (v. 15). The verse is not another instruction about giving but a closing statement that gathers the whole discussion into gratitude.
The explicit reason for this thanks is “his gift” (). Paul describes it as “unspeakable” (), meaning it is beyond adequate wording. Whatever human generosity accomplishes, Paul frames it as flowing from something God has already given.
Where interpretation differs
What is “the gift”? Paul does not specify. Some read the “gift” as God’s gift in Christ (God’s saving action and the benefits that come with it), and see this as Paul’s final word under the whole letter’s message. Others read it more narrowly as God’s generous provision that makes the Corinthian gift and the Jerusalem relief possible (including the grace that produces generosity).
What does “unspeakable” emphasize? Some take it mainly as “so great no one can fully describe it.” Others stress “so rich and complex it cannot be fully explained,” highlighting mystery and depth more than sheer size.
Why the disagreement exists
The verse is very short and contains no clarifying details. In the immediate context (2 Corinthians 8–9), Paul has been describing practical giving, thanksgiving, and the way God supplies generosity. At the same time, Paul often uses “gift” language for God’s definitive giving in Christ elsewhere. The text itself does not settle which reference is primary.
What this passage clearly contributes
This verse contributes a final theological framing for the collection: gratitude is directed to God as the ultimate giver. It also emphasizes that God’s giving exceeds human language. The passage does not explicitly define the “gift,” but it clearly portrays God’s generosity as the source and climax of the entire appeal.