Numbers 3:46-51

46And aas the redemption price for the 273 of the firstborn of the people of Israel, over and above the number of the male Levites, 47you shall take bfive shekels
A  shekel was about 2/5 ounce or 11 grams
per head; you shall take them according to dthe shekel of the sanctuary (the shekel of twenty gerahs
A  gerah was about 1/50 ounce or 0.6 gram
),
48and give the money to Aaron and his sons as the redemption price for those who are over.” 49So Moses took the redemption money from those who were over and above those redeemed by the Levites. 50From the firstborn of the people of Israel he took the money, f1,365 shekels, by the shekel of the sanctuary. 51And Moses ggave the redemption money to Aaron and his sons, according to the word of the Lord, as the Lord commanded Moses.

Numbers 18:15-16

15 hEverything that opens the womb of all flesh, whether man or beast, which they offer to the Lord, shall be yours. Nevertheless, ithe firstborn of man you shall redeem, and the firstborn of unclean animals you shall redeem. 16And their redemption price j(at a month old you shall redeem them) you shall fix at five shekels
A  shekel was about 2/5 ounce or 11 grams
in silver, according to the shekel of the sanctuary, lwhich is twenty gerahs.

Revelation of John 14:4

4It is these who have not defiled themselves with women, for mthey are virgins. It is these nwho follow the Lamb wherever he goes. These have been redeemed from mankind as ofirstfruits for God and the Lamb,
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