Numbers 29:1, 12, 35

‘And in the seventh month, on the first day of the month, you shall have a holy convocation. You shall do no customary work. For you it is a day of blowing the trumpets.

‘On the fifteenth day of the seventh month you shall have a holy convocation. You shall do no customary work, and you shall keep a feast to the LORD seven days.

‘On the eighth day you shall have a sacred assembly. You shall do no customary work.