1 Samuel 6:4

Five golden emerods, and five golden mice. — It was a general custom in the nations of antiquity to offer to the deity, to whom sickness or recovery from sickness was ascribed, likenesses of the diseased parts; so, too, those who had escaped from shipwreck would offer pictures, or perhaps their garments, to Neptune, or, as some tell us, to Isis. (See, for instance, Horace, Carm. i. 5.) Slaves and gladiators would present their arms to Hercules; captives would dedicate their chains to some deity. This practice has found favour in more modern times. In the fifth century Christians — Theodoret tells us — would often offer in their churches gold or silver hands and feet, or eyes, as a thank-offering for cures effected in reply to prayer. Similar votive offerings are still made in Roman Catholic countries.