In 2 Corinthians 12, Paul was suffering from an infirmity. He viewed it as "a messenger of Satan to buffet me," and he prayed three times for healing. Though God didn't choose to heal him, He did say, "My grace is sufficient for you, for My strength is made perfect in weakness." That changed Paul's attitude, and he responded, "Therefore most gladly I will rather boast in my infirmities, that the power of Christ may rest upon me."