This is one of the hardest questions there is, and it deserves honesty rather than a tidy formula. Anyone who offers a quick reason for another person’s suffering should be treated with caution. Christians hold together two things that are hard to hold at once: a real belief that God heals, and the lived reality that many faithful people are not healed in the way they longed for. What faith does not require is pretending the pain is smaller than it is; lament — bringing raw grief and even protest to God — runs all through Scripture and is treated as faithful, not rebellious. Many people find that healing and cure are not always the same word: bodies are not always mended, yet people are sometimes carried, held, and changed in ways they did not expect. If you are in the middle of this now, you do not need a reason to keep praying. You are allowed to keep asking, keep grieving, and keep trusting all at once. This is also a good place to lean on others rather than carry it alone.