Numbers 3:45-47

21st Century King James Version

⁴⁵ “Take the Levites instead of all the firstborn among the children of Israel, and the cattle of the Levites instead of their cattle. And the Levites shall be Mine: I am the Lord.

⁴⁶ And for those who are to be redeemed of the two hundred and threescore and thirteen of the firstborn of the children of Israel, who are more than the Levites,

⁴⁷ thou shalt even take five shekels apiece by head count; according to the shekel of the sanctuary shalt thou take them (the shekel is twenty gerahs).