How can we endure suffering without a clear purpose or divine knowledge, like Jesus had?

Throughout history, people have faced suffering, sometimes even choosing to endure pain or death for a cause they believe is greater than themselves. Soldiers in war, for instance, may face the possibility of dying because they believe their sacrifice will protect others or bring about some greater good. If I had the certainty that my death would save others or fulfill some noble purpose, I could understand willingly sacrificing myself. Jesus, had that knowledge about His own sacrifice. He knew His suffering would bring redemption. However, as an individual, I lack that certainty. I don’t have the divine knowledge Jesus had about the greater meaning behind His suffering, and yet I am still expected to endure pain, hardship, and loss. Why is it that humans are required to endure so much suffering without the kind of clarity that Jesus had? Why do we go through physical and emotional pain that often seems endless and without purpose? How can we find the strength to keep going in the absence of clear knowledge of the purpose of our suffering? Does this kind of endurance even have meaning, or is it simply part of the human experience that we must accept? How do we endure the feelings of helplessness and despair when we don't know why we are going through it all?