Instead of being distracted by interpretations of the future, we should be ready for the Lord to return at any time, and concentrate on the way He wants us to live now. Becoming a Christian does not instantly make us exempt from hardship. In fact, some Christians find that they go through many more difficulties after they are saved. There are several reasons why we experience problems in this life. Some of the problems and hardships we experience are due to sin.
Every sin yields a consequence.
This may mean anything from losing friends to contracting a disease. Many people do not understand why a loving God would give harsh penalties to His children. Our sins may not always yield immediate consequences, but problems eventually result from them. Additionally, every time a person sins, people around that person are affected by it. When David sinned with Bathsheba, he committed adultery, had her husband Uriah murdered and later lost his own son as a result.