Shared ground
Paul draws a sharp line between having a right to receive support and choosing not to use it in Corinth. Explicitly, he says he has taken none of the support he has been discussing, and he is not bringing the topic up now to get paid (v.15). He ties that decision to protecting his “boasting” from being “emptied”—meaning some legitimate basis for confidence about the way he ministered there would be undermined if money entered the picture (v.15).
He also insists that preaching itself is not his personal achievement. He preaches under “necessity,” and he speaks of “woe” if he does not preach (v.16). Whatever else is debated, the text presents his work as an obligation laid on him, not a self-chosen project meant to earn applause.
Finally, Paul defines his “reward” in an unexpected way: the privilege of presenting the gospel free of charge, so that he does not “abuse” (misuse) his authority in the gospel (v.18).
Where interpretation differs
1) What exactly is Paul’s “boasting” in Corinth?
Some take it mainly as Paul’s integrity and independence: he can point to refusing payment as evidence he was not selling a message or courting patrons. Others think it is broader: his whole manner of ministry in Corinth—marked by self-limitation—functions as his rightful ground for confidence, and payment would blur that.
2) What does “necessity is laid on me” mean?
Some read it primarily as an inward calling that binds his conscience. Others read it primarily as an external divine assignment (a commission) that makes preaching non-optional. Many combine both: an assigned task that is experienced as inner constraint.
3) What kind of “reward” is Paul talking about?
Some read “reward” as a present, ministry-shaped outcome: the satisfaction and credibility of offering the gospel without charge. Others think future recognition is also in view, but they still note that in this paragraph Paul immediately answers his own question by pointing to the concrete practice of not charging (v.18).
Why the disagreement exists
Paul uses everyday terms (“boasting,” “necessity,” “reward,” “abuse of authority”) in a context where several meanings could fit. The immediate context stresses money and credibility in Corinth, which pushes readers toward “no-charge ministry” as the main issue; but his language about compulsion and stewardship also points beyond local circumstances to his overall commission.
What this passage clearly contributes
This paragraph clarifies that Paul’s refusal of payment at Corinth is not because he doubts the legitimacy of support for gospel workers (that was argued just before), but because he sees a specific moral and relational value in not using that right there (v.15, v.18). It also frames gospel ministry as a entrusted responsibility rather than a platform for personal status (v.16–17). Within that entrusted task, Paul identifies at least one voluntary element he can offer: presenting the gospel without charge so his authority cannot be accused of being used for gain (v.18).