To what was Paul referring by the term “thorn in the flesh”?

Today Bible Study:

To what was Paul referring by the term “thorn in the flesh”?

Paul began his account about the “thorn in the flesh” by indicating the reason it was given to him—“lest I should be exalted above measure.” The assault was painful, but purposeful. As with Job, Satan was the immediate cause, but God was the ultimate cause. God was allowing Satan to bring this severe trouble in the church for the purpose of humbling Paul who, having had so many revelations, including a trip to heaven and back, would have been proud.

Paul’s use of the word “messenger” (Greek, angellos, or angel) from Satan suggests the “thorn in the flesh” (literally, “a stake for the flesh”) was a demon, not a physical illness. Of the 188 uses of the Greek word angellos in the New Testament, at least 180 are in reference to angels. This angel was from Satan, a demon afflicting Paul.

Possibly, the best explanation for this demon was that he was indwelling the ring leader of the Corinthian conspiracy, the leader of the false apostles. Through them he was tearing up Paul’s beloved church and thus driving a painful stake through Paul. Further support for this view comes from the context of chapters 10–13, which is one of fighting adversaries (the false prophets). The verb translated “buffet” always refers to ill treatment from other people (Matt. 26:67; Mark 14:65; 1 Cor. 4:11; 1 Pet. 2:20). Finally, the Old Testament describes Israel’s personal opponents as thorns (Num. 33:55; Josh. 23:13; Judg. 2:3; Ezek. 28:24).