Second Corinthians 12:1–10 contains Paul’s description of an astonishing experience. He was transported, in some sense, to the third heaven or paradise, where he received an unspeakable revelation from God. To keep him humble afterwards, God gave him a ”thorn in the flesh” and refused to remove it despite Paul’s pleas. Instead, God told Paul His grace was more than enough, and that His power was made perfect in Paul’s weakness. Paul declares once again that he will boast in his weakness and be content in his suffering—because when Paul is weak, it more clearly proves that Christ is powerful.
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“2 Corinthians 12:9” Bibleref.com
2 Corinthians 12:9
9 He has said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Most gladly therefore I will rather glory in my weaknesses, that the power of Christ may rest on me.