The devil has sworn to kill me, this I certainly know, and he will have no peace until he has devoured me. All right, if he devours me, he shall devour a laxative (God willing) which will make his bowels and anus to tight for him. Do you want to bet? One has to suffer if he wants to possess Christ. It would be easy indeed for us to triumph if we were willing to deny and calumniate [Christ]. Yet it is written, "Through many tribulations we must enter the Kingdom of God" (Acts 14:22). This is no longer just a word; it has become a reality, and we should act accordingly. Yet He is [here] who along with the tribulation brings about escape for the faithful (From a letter to Philip Melanchthon as quoted in The Wit of Martin Luther by Eric Gritsch, page 95).
A great perspective from a man who suffered from many afflictions and illnesses. Many we also find comfort from Christ who along with the tribulation brings about escape for the faithful.