Exodus 34:20-22

New Revised Standard Version, Anglicised Catholic Edition

²⁰ The firstborn of a donkey you shall redeem with a lamb, or if you will not redeem it you shall break its neck. All the firstborn of your sons you shall redeem.

No one shall appear before me empty-handed.

²¹ For six days you shall work, but on the seventh day you shall rest; even in ploughing time and in harvest time you shall rest. ²² You shall observe the festival of weeks, the first fruits of wheat harvest, and the festival of ingathering at the turn of the year.