Nothing can cause us to have difficulty in how we treat others and ourselves like death and suffering. Yesterday we got a picture of the type of person Tobit was. Faithful to God, concerned for the poor, ready to commit to his faith and in God even to death if necessary. But today we encounter a different side of Tobit. He has lost his sight when birds poop on him. Scholars think that Tobit actually developed some type of infection similar to Pink Eye (conjunctivitis) only with much more serious consequences. Not treated this more severe form of the disease can cause blindness.
However, what we see here in the story is that he does not react so well to his wife. We know that Tobit was a wealthy man, one who had many accomplishments. How hard it must have been, as a blind man, to now rely on others for his care, his basic needs, and his mobility. When his hard working wife comes home with a goat as a bonus, Tobit gets quite angry, to the point of accusing her of stealing. How common this is in the spiritual life. We too can find ourselves quite close to God one minute, and frustrated and angry at another moment.