The thorn in Paul's side I've always understood from my discussions with Pastors and others to be some kind of sin. We do not know what kind of sin, but it's there. Paul is struggling. Does it mean he was still sinning? We don't know - but as Christ said, even if it's internal (lust, anger), it's still a sin. Paul understood that too and still struggled with some sinful thorn. We all do, as John points out in 1 John - we're all sinners & anyone who says otherwise is a liar & calling God a liar. This included Paul, who was susceptible to something. This passage reminds us we all fall short, we all have something sinful we are drawn to, and only through the power of Christ can we defeat it. On our own, in our own power - we will fail. In Christ's power, in His glorious grace - we can do it.
Christian -- Dad -- Husband -- Engineer -- Conservative -- Beard Aficionado -- General Dork