Exodus 34:20-22

Revised Standard Version

²⁰ The firstling of an ass you shall redeem with a lamb, or if you will not redeem it you shall break its neck. All the first-born of your sons you shall redeem. And none shall appear before me empty.

²¹ “Six days you shall work, but on the seventh day you shall rest; in plowing time and in harvest you shall rest. ²² And you shall observe the feast of weeks, the first fruits of wheat harvest, and the feast of ingathering at the year’s end.