There shall be a feast on the fifteenth day of this month; unleavened bread shall be eaten for seven days.

‘Then on the fifteenth day of the seventh month you shall have a holy [summoned] assembly; you shall do no laborious work, and you shall observe a Feast [of Booths] to the Lord for seven days.

According to the number of days in which you spied out the land [of Canaan], forty days, for each day, you shall bear and suffer a year for your sins and guilt, for forty years, and you shall know My displeasure [the revoking of My promise and My estrangement because of your sin].

and he shall dedicate himself to the Lord for the time of his separation and shall bring a male lamb a year old as a guilt offering; but the previous days will be void and lost, because his separation was defiled.

So they set out from the mountain of the Lord (Sinai) three days’ journey; and the ark of the covenant of the Lord went in front of them during the three days’ journey to seek out a resting place for them.

But the Lord said to Moses, “If her father had but spit in her face, would she not bear her shame for seven days? Let her be shut up outside the camp for seven days, and afterward she may return.”