⁴⁶ There are 273 more firstborn sons of Israel than there are Levites. To redeem these extra firstborn sons,

¹³ A firstborn donkey may be bought back from the Lord by presenting a lamb or young goat in its place. But if you do not buy it back, you must break its neck. However, you must buy back every firstborn son.

¹⁵ “The firstborn of every mother, whether human or animal, that is offered to the Lord will be yours. But you must always redeem your firstborn sons and the firstborn of ceremonially unclean animals. ¹⁶ Redeem them when they are one month old. The redemption price is five pieces of silver^[a] (as measured by the weight of the sanctuary shekel, which equals twenty gerahs).