'Weaknesses' in the Bible

On behalf of such a man [and his experiences] I will boast; but in my own behalf I will not boast, except in regard to my weaknesses.

but He has said to me, “My grace is sufficient for you [My lovingkindness and My mercy are more than enough—always available—regardless of the situation]; for [My] power is being perfected [and is completed and shows itself most effectively] in [your] weakness.” Therefore, I will all the more gladly boast in my weaknesses, so that the power of Christ [may completely enfold me and] may dwell in me.