Shared ground
Paul presents his public work as an assigned task, not a self-chosen platform: he was “appointed” as a preacher, an apostle, and a teacher with a clear outward focus “to the Gentiles.” (Explicit claim.) His suffering is linked directly to that assignment (“for this cause I suffer”). (Explicit claim.)
He also frames shame as a real social pressure but not a controlling one: “I am not ashamed.” (Explicit claim.) The basis for that stance is not denial of pain or confidence in outcomes, but trust in a person (“I know him whom I have believed”) and confidence in that person’s power to protect what Paul has entrusted until “that day.” (Explicit claim; note .)
Where interpretation differs
1) What “this” points to in vv. 11–12. Some read “this” as the gospel/message in the nearby context (Paul was appointed for the message, so he suffers). Others read it more narrowly as his specific ministry to the Gentiles (his cross-ethnic mission is why he suffers).
2) What Paul “committed” for safekeeping. Some think it is Paul’s own life and destiny—his whole self placed into God’s care. Others think it is the gospel itself or Paul’s entrusted ministry/task (what God gave Paul to steward, now placed back into God’s protection).
3) What “that day” refers to. Many take it as the final day of judgment and public vindication. Others read it as the decisive future moment when God resolves things for Paul (still future and ultimate, but not defined in detail here).
Why the disagreement exists
The phrases are short and refer back without restating the full object (“this,” “what I committed,” “that day”). The immediate context is about the message and Paul’s calling, but the wording also fits personal trust and personal destiny. The text itself does not spell out the referents, so interpreters weigh nearby context and Paul’s wider language elsewhere.
What this passage clearly contributes
Paul ties suffering to vocation: hardship is presented as a foreseeable outcome of being appointed to public announcing, authorized sending, and teaching across ethnic lines (inference tightly tied to the explicit “for this cause I suffer”). The passage also grounds resilience against shame in a relational center (“I know him…”) and in confidence that the trusted one can guard an entrusted deposit until a future day of resolution. It contributes a time horizon (“that day”) that frames present suffering as temporary and answerable to God’s keeping power rather than public opinion.