Numbers 29:1, 12, 35

‘Now in the seventh month, on the first day of the month, you shall also have a holy convocation; you shall do no laborious work. It will be to you a day for blowing trumpets.

‘Then on the fifteenth day of the seventh month you shall have a holy convocation; you shall do no laborious work, and you shall observe a feast to the LORD for seven days.

‘On the eighth day you shall have a solemn assembly; you shall do no laborious work.