When my friend David’s wife developed Alzheimer’s disease, the changes it brought to his life made him bitter. He needed to retire early to care for her; and as the disease progressed, she required increasingly more care.

“I was so angry at God,” he told me. “But the more I prayed about it, the more He showed me my heart and how I had been selfish for most of our marriage.” Tears welled in his eyes as he confessed, “She’s been sick ten years, but God has helped me see things differently. Now, everything I do out of love for her,…