Numbers 28:17-18

28:17 And on the fifteenth day of this month is the festival. For seven days bread made without yeast must be eaten. 28:18 And on the first day there is to be a holy assembly; you must do no ordinary work ¹  on it.

[28:18]  ¹ tn Heb “any work [of] service”; this means any occupational work, that is, the ordinary service.