That is why we never give up. Though our bodies are dying, our spirits are being renewed every day. For our present troubles are quite small and won’t last very long. Yet they produce for us an immeasurably great glory that will last forever! So we don’t look at the troubles we can see right now; rather, we look forward to what we have not yet seen. For the troubles we see will soon be over, but the joys to come will last forever.
2 Corinthians 4:16-18

Pain is inevitable because we live in a fallen world. 1 Thessalonians 3:3 reminds us that we are "destined for trials." We don't have a choice whether we will suffer--our choice is to go through it by ourselves or with God.

Suffering teaches us the difference between the important and the transient. It prepares us for heaven by teaching us how unfulfilling life on earth is and helping us develop an eternal perspective. Suffering makes us homesick for heaven.

Deep suffering of the soul is also a taste of hell. After many sleepless nights wracked by various kinds of pain, my friend Jan now knows what she was saved from. Many Christians only know they're saved without grasping what it is Christ has delivered them from. Jan's suffering has given her an appreciation of the reality of heaven, and she's been changed forever.

I have an appreciation of heaven gained from a different experience. As my body weakens from the lifelong impact of polio, to be honest, I have a deep frustration with it that makes me grateful for the perfect, beautiful, completely working resurrection body waiting for me on the other side. My husband once told me that heaven is more real to me than anyone he knows. Suffering has done that for me. Paul explained what happens in 2 Corinthians 4:16-18:

"Though outwardly we are wasting away, yet inwardly we are being renewed day by day. For our light and momentary troubles are achieving for us an eternal glory that far outweighs them all. So we fix our eyes not on what is seen, but on what is unseen, for what is seen is temporary, but what is unseen is eternal."

One of the effects of suffering is to loosen our grasp on this life, because we shouldn't be thinking that life in a fallen world is as wonderful as we sometimes think it is. Pastor Dick Bacon once said, "If this life were easy, we'd just love it too much. If God didn't make it painful, we'd never let go of it." Suffering reminds us that we live in an abnormal world. Suffering is abnormal--our souls protest, "This isn't right!" We need to be reminded that we are living in "Plan B." The perfect Plan A of God's beautiful, suffering-free creation was ruined when Adam and Eve fell. So often, people wonder what kind of cruel God would deliberately make a world so full of pain and suffering. They've lost track of history. The world God originally made isn't the one we experience. Suffering can make us long for the new heaven and the new earth where God will set all things right again.

Sometimes suffering literally prepares us for heaven. Cheryl's in-laws, both beset by lingering illnesses, couldn't understand why they couldn't just die and get it over with. But after three long years of holding on, during a visit from Cheryl's pastor, the wife trusted Christ on her deathbed and the husband received assurance of his salvation. A week later the wife died, followed in six months by her husband. They had continued to suffer because of God's mercy and patience, who did not let them go before they received His gracious gift of salvation.

Suffering dispels the cloaking mists of inconsequential distractions of this life and puts things in their proper perspective. My friend Pete buried his wife a few years ago after a battle with Lou Gehrig's disease. One morning I learned that his car had died on the way to church, and I said something about what a bummer it was. Pete just shrugged and said, "This is nothing." That's what suffering will do for us. Trials are nothing . . . but God is everything.