Well-intentioned people often take on the role of God's defense attorney. Sometimes when bad things happen to us they "defend" God by telling us that the ways of God are mysterious, and we do not understand them. That which seems to be a bad thing - a child who is born blind - is really a beautiful thing. We should give thanks for the blindness or tragedy. It is all God's Will.

Perhaps our friends will use the famous illustration of Thorton Wilder from his book The Eighth Day, where he compares life to a beautiful tapestry: "Looked at from the right side, it is an intricately woven work of art, drawing together threads of different lengths and colors to make up an inspiring picture. But turn the tapestry over, and you will see a hodgepodge of many threads, some short and some long, some smooth and some cut and knotted, going off in different directions. Wilder offers this as his explanation of why good people have to suffer in this life. God has a pattern into which all of our lives fit. His pattern requires that some lives be twisted, knotted, or cut short, while others extend to impressive lengths, not because one thread is more deserving than another, but simply because the pattern requires it. Looked at from underneath, from our vantage point in life, God's pattern of reward and punishment seems arbitrary and without design, like the underside of a tapestry. But looked at from outside this life, from God's vantage point, every twist and knot is seen to have its place in a great design that adds up to a work of art."

Telling someone that the tragedy that has just befallen them is "God's will" is the worst possible thing you could say to them.