In times of need, Jesus promises his disciples, you will receive strength from beyond.  Rabbi Harold Kushner reflects on this strength. "I have seen weak people become strong," he writes, "timid people become brave, selfish people become generous. I have seen people care for their elderly parents, for brain damaged children, for wives in wheelchairs, for years, even decades, and I have asked myself, where do people get the strength to keep doing that for so long? Where do they get the resources of love and loyalty to keep going? The only answer I come up with is when we are weary and out of strength, we turn to God and God renews our strength, so we can run and not grow weary, so that we can walk and not feel faint."