Here's another Scripture verse for ya speaking directly of the remains of a deceased saint...
"So Elisha died, and they buried him. Now bands of Moabites used to invade the land in the spring of the year. And as a man was being buried, lo, a marauding band was seen and the man was cast into the grave of Elisha; and as soon as the man touched the bones of Elisha, he revived, and stood on his feet" (2 Kgs. 13:20-21).
The Church doesn't claim that relics have "magical powers"...the use of them is not necessary for one to be a faithful Catholic. However, the Church says relics may be "the occasion of God's miracles." Jesus himself used material objects (mud and spit, among other things!) as the instruments of miracles. A hemorraging woman was healed by touching His cloak, the sick were healed when Peter's shadow passed over them, and of course, Paul's hankies and aprons that were already mentioned.
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