“Paul said to his Ephesian readers, discouraged because of his imprisonment, “My suffering is for your glory.” Why? Because that is how it works. Suffering and glory are closely linked. Suffering glorifies God to the universe and eventually even achieves a glory for us. And do you know why suffering and glory are so tied to each other? It is because of Jesus. Philippians 2 tells us Jesus laid aside his glory. Why? Charles Wesley’s famous Christmas carol tells you. Mild he lays his glory by; born that men no more may die; Born to raise the sons of earth. Born to give them second birth. Jesus lost all his glory so that we could be clothed in it. He was shut out so we could get access. He was bound, nailed, so that we could be free. He was cast out so we could approach. And Jesus took away the only kind of suffering that can really destroy you: that is being cast away from God. He took that so that now all suffering that comes into your life will only make you great. A lump of coal under pressure becomes a diamond. And the suffering of a person in Christ only turns you into somebody gorgeous. Jesus Christ suffered, not so that we would never suffer but so that when we suffer we would be like him. His suffering led to glory. And you can see it in Paul. Paul is happy to be in prison because “my sufferings are for your glory,” he says. He is like Jesus now. Because that is how Jesus did it. And if you know that that glory is coming, you can handle suffering, too.”
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Timothy Keller,
Walking with God through Pain and Suffering