They’re crowned as martyrs (Saint Porphyrios of Kavsokalyvia)

If the Lord allows sicknesses to test people, then He’ll also give them the strength of patience. If people bear their illness with patience and gratitude to God they’re crowned as martyrs and strivers. Just as wax doesn’t become soft unless it’s heated enough to bear a stamp, so the soul can’t accept the stamp of virtue unless it’s been tried with labors and sicknesses.