Shared ground
Paul links two realities that seem to clash: extraordinary “revelations” and a continuing, painful limitation (“a thorn in the flesh”). The text explicitly says the thorn functioned to keep him from becoming overly self-important (v.7). It also explicitly frames the thorn as both “given to me” and as “a messenger of Satan” that keeps striking him (v.7).
Paul’s prayer is equally clear: he asked the Lord three times for the thorn to leave (v.8). The Lord’s answer is not removal but a reinterpretation of what Paul can rely on: “My grace is sufficient for you, for my power is made perfect in weakness” (v.9). Paul then draws a conclusion about how to speak of his life and ministry: he will boast in weaknesses so that Christ’s power may “rest on” him, and he can accept a range of hardships “for Christ’s sake” (vv.9–10).
Where interpretation differs
1) What the “thorn” was. The passage never identifies it. Some think it was a physical illness or disability because it is “in the flesh.” Others think it refers to ongoing persecution, opposition, or some personal vulnerability that affected his work, because Paul immediately lists hardships like insults and persecutions (v.10) and because “messenger” could sound like an outside attacker.
2) How “given to me” relates to “messenger of Satan.” The text holds both together. Some read this as God allowing a satanic attack with a protective purpose (preventing conceit). Others emphasize that the immediate agent is satanic, while God’s role is seen mainly in how God answers and repurposes the suffering with grace.
3) What “made perfect in weakness” means. All readings agree it does not mean weakness is good in itself. Some take it to mean God’s power becomes most visible when human resources are limited. Others stress that God’s power reaches its intended effect in sustaining faithful ministry precisely through ongoing weakness rather than by removing it.
Why the disagreement exists
The passage gives strong purpose language (“so that I should not be exalted excessively”) and a strong description of hostility (“messenger of Satan”), but it does not supply concrete details about the thorn’s identity. It also uses compact, paradox-style language about power and weaknesses, which invites different ways of explaining how God’s action and suffering relate.
What this passage clearly contributes
Explicitly, it presents unanswered prayer (in the sense of non-removal) as compatible with God’s care, because God answers with “sufficient” grace rather than with the requested change (vv.8–9). It also reframes “strength” in Paul’s ministry: true strength is not self-display but Christ’s power “resting on” him in weakness (vv.9–10). As a theological inference grounded in the text’s logic, the passage supports a view of Christian ministry where limitations can serve protective and clarifying purposes, and where God’s sustaining grace is not a second-best substitute but the stated solution God gives in this case (v.9; compare the wider letter’s theme of “treasure in jars of clay,” 2 Corinthians 4:7).