From Desiring God Ministries, here is a video about the marriage of Ian and Larissa Murphy. As John Piper explains:
Being satisfied in God (or anything) always seems easier when all is going well. But when things you love are being stripped out of your hands, then the test is real. If God remains precious in those moments, then his supreme worth shines more brightly. He is most glorified.
The most meaningful testimonies I receive are when people tell me that it was a vision of the sovereignty and goodness of God that got them through the most difficult times of their life.