“And for those that are to be redeemed of the two hundred and threescore and thirteen of the firstborn of the children of Israel, which are more than the Levites;”
King James Version (KJV)
3:46 For those that are to be redeemed - 'Tis probable, in the exchange they began with the eldest of the first - born, and so downwards, so that those were to be redeemed, who were the two hundred, seventy three youngest of them.