Leviticus 23:5-9

⁵In the fourteenth day of the first month at even is the LORD’s passover.

⁶And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.

⁷In the first day ye shall have an holy convocation: ye shall do no servile work therein.

⁸But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.

⁹And the LORD spake unto Moses, saying,