The feast of Tabernacles/Shelters

Numbers 29:14-40
Feast of Tabernacles/Shelters: 7/15, celebrate 7 days, present an offering made by fire as an aroma pleasing to the Lord.
       13 Bulls   with 3/10 ephah fine flour mixed with oil
         2 Rams   with 2/10 ephah fine flour
       14 Lambs  with 1/20 ephah fine flour
         1 male goat as a sin offering
Second day : 12 Bulls, 3rd day: 11 Bulls, 4rh day: 10 bulls, 5th day: 9 bulls, 6th day: 8 bulls, 7th day: 7 bulls, others are same as first day
8th day:
        1 Bulls   with 3/10 ephah fine flour mixed with oil
        1 Rams   with 2/10 ephah fine flour
        7 Lambs  with 1/20 ephah fine flour
        1 male goat as a sin offering
In addition to what youvow and your freewill offerings, prepare these for the Lord at your appointed feasts.
Why?
Do no regular work, hold a sacred assembly. This is an important festival. It likes a new year festival or celebration period.
How?
It is the command of the Lord, meanwhile it let his people rest for celebration. Rest is needy to workers.