"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.
Numbers 29:12
Surrounding context
29:11 also one kid of the goats as a sin offering, besides the sin offering for atonement, the regular burnt offering with its grain offering, and their drink offerings. ]
29:12 "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.
29:13 You shall present a burnt offering, an offering made by fire as a sweet aroma to the LORD: thirteen young bulls, two rams, and fourteen lambs in their first year. They shall be without blemish.