A friend of mine has written the most exquisite Lenten devotional based on the passage in Mark about the evening of anguish spend alone in the garden.
I commend it to you here.
Why do we suffer? Why is it not removed? This we cannot say. But we can say, as Josh says, that in suffering we see the eyes of Jesus. It is difficult to keep both the depth of our suffering and a sovereign God in sight at the same time. But Josh shows us how without fancy theological argument.