Leviticus 23:6-8

New International Version - UK

⁶ On the fifteenth day of that month the Lord’s Festival of Unleavened Bread begins; for seven days you must eat bread made without yeast. ⁷ On the first day hold a sacred assembly and do not do any of your ordinary work. ⁸ For seven days present a food offering to the Lord. And on the seventh day hold a sacred assembly and do not do any of your ordinary work.”’