Well, let's look at the scripture together............
God Disciplines His Children
4 In your struggle against sin, you have not yet resisted to the point of shedding
your blood. 5 And have you completely forgotten this word of encouragement that addresses you as a father addresses his son? It says,
“My son, do not make light of the Lord’s discipline,
and do not lose heart when he rebukes you,
6 because the Lord disciplines the one he loves,
and he chastens everyone he accepts as his son.”[
a]
So, it has to do with our struggle against sin. Notice, Paul says, "your blood." Hmmmmm
It's our flesh - the carnal, selfish nature that must die on our cross. We're to deny ourselves, take up our cross and follow Him (Jesus).
Correction is good for us.