Deuteronomy 16:15

Seven days you shall celebrate a feast to the Lord your God in the place which the Lord chooses, because the Lord your God will bless you in all your produce and in all the work of your hands, so that you will be altogether joyful.

Leviticus 23:36-42

For seven days you shall present an offering by fire to the Lord. On the eighth day you shall have a holy convocation and present an offering by fire to the Lord; it is an assembly. You shall do no laborious work.

Numbers 29:12-38

‘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.

Deuteronomy 7:13

He will love you and bless you and multiply you; He will also bless the fruit of your womb and the fruit of your ground, your grain and your new wine and your oil, the increase of your herd and the young of your flock, in the land which He swore to your forefathers to give you.

Deuteronomy 16:10

Then you shall celebrate the Feast of Weeks to the Lord your God with a tribute of a freewill offering of your hand, which you shall give just as the Lord your God blesses you;

Deuteronomy 28:8-12

The Lord will command the blessing upon you in your barns and in all that you put your hand to, and He will bless you in the land which the Lord your God gives you.

Deuteronomy 30:16

in that I command you today to love the Lord your God, to walk in His ways and to keep His commandments and His statutes and His judgments, that you may live and multiply, and that the Lord your God may bless you in the land where you are entering to possess it.

Treasury of Scripture Knowledge

Summary

Seven days shalt thou keep a solemn feast unto the LORD thy God in the place which the LORD shall choose: because the LORD thy God shall bless thee in all thine increase, and in all the works of thine hands, therefore thou shalt surely rejoice.

General references

Bible References

Seven days

Leviticus 23:36
For seven days you shall present an offering by fire to the Lord. On the eighth day you shall have a holy convocation and present an offering by fire to the Lord; it is an assembly. You shall do no laborious work.
Numbers 29:12
‘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.

Because

Deuteronomy 16:10
Then you shall celebrate the Feast of Weeks to the Lord your God with a tribute of a freewill offering of your hand, which you shall give just as the Lord your God blesses you;
Deuteronomy 7:13
He will love you and bless you and multiply you; He will also bless the fruit of your womb and the fruit of your ground, your grain and your new wine and your oil, the increase of your herd and the young of your flock, in the land which He swore to your forefathers to give you.
Deuteronomy 28:8
The Lord will command the blessing upon you in your barns and in all that you put your hand to, and He will bless you in the land which the Lord your God gives you.
Deuteronomy 30:16
in that I command you today to love the Lord your God, to walk in His ways and to keep His commandments and His statutes and His judgments, that you may live and multiply, and that the Lord your God may bless you in the land where you are entering to possess it.

General references

Deuteronomy 16:12
You shall remember that you were a slave in Egypt, and you shall be careful to observe these statutes.
John 7:2
Now the feast of the Jews, the Feast of Booths, was near.