Numbers 28:16-18

ISV^{(i) 16} Annual Offerings“The LORD’s Passover is to take place on the fourteenth day of the first month. ¹⁷ You are to hold a festival on the fifteenth day of this month for seven days, during which time unleavened bread is to be eaten.”
¹⁸ A Week of Post-Passover Offerings“On the first day, you are to hold a sacred assembly. No servile work is to be done.