What does the Bible say about sickness?

The Bible teaches that sickness, disease, pain, and death are consequences of human sin as demonstrated in Romans 5:12. However, for those who are loved by God, such as Martha, Mary, and Lazarus, sickness is not a sign of God’s displeasure. Instead, it serves several purposes, including glorifying God and testing faith. This reality highlights that being loved by God does not exempt one from suffering; rather, it can be a means through which God brings about good in our lives as promised in Romans 8:28.