Exodus 34:20 ASV

¹⁸  The feast of unleavened bread shalt thou keep. Seven days thou shalt eat unleavened bread, as I commanded thee, at the time appointed in the month Abib; for in the month Abib thou camest out from Egypt.

¹⁹  All that openeth the womb is mine; and all thy cattle that is male, the firstlings of cow and sheep.

²⁰  And the firstling of an ass thou shalt redeem with a lamb: and if thou wilt not redeem it, then thou shalt break its neck. All the first-born of thy sons thou shalt redeem. And none shall appear before me empty.

²¹  Six days thou shalt work, but on the seventh day thou shalt rest: in plowing time and in harvest thou shalt rest.

²²  And thou shalt observe the feast of weeks, 'even' of the first-fruits of wheat harvest, and the feast of ingathering at the year's end.