Deuteronomy 16:15

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

Leviticus 23:36-42

Seven days you shall offer an offering made by fire unto the LORD: on the eighth day shall be a holy convocation unto you; and you shall offer an offering made by fire unto the LORD: it is a solemn assembly; and you shall do no regular work on it.

Numbers 29:12-38

And on the fifteenth day of the seventh month you shall have a holy convocation; you shall do no regular work, and you shall keep a feast unto the LORD seven days:

Deuteronomy 7:13

And he will love you, and bless you, and multiply you: he will also bless the fruit of your womb, and the fruit of your land, your grain, and your wine, and your oil, the increase of your cattle, and the flocks of your sheep, in the land which he swore unto your fathers to give you.

Deuteronomy 16:10

And you shall keep the feast of weeks unto the LORD your God with a tribute of a freewill offering of your hand, which you shall give unto the LORD your God, according as the LORD your God has blessed you:

Deuteronomy 28:8-12

The LORD shall command the blessing upon you in your storehouses, and in all that you set your hand unto; and he shall bless you in the land which the LORD your God gives you.

Deuteronomy 30:16

In that I command you this day 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 the LORD your God shall bless you in the land where you go 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
Seven days you shall offer an offering made by fire unto the LORD: on the eighth day shall be a holy convocation unto you; and you shall offer an offering made by fire unto the LORD: it is a solemn assembly; and you shall do no regular work on it.
Numbers 29:12
And on the fifteenth day of the seventh month you shall have a holy convocation; you shall do no regular work, and you shall keep a feast unto the LORD seven days:

Because

Deuteronomy 16:10
And you shall keep the feast of weeks unto the LORD your God with a tribute of a freewill offering of your hand, which you shall give unto the LORD your God, according as the LORD your God has blessed you:
Deuteronomy 7:13
And he will love you, and bless you, and multiply you: he will also bless the fruit of your womb, and the fruit of your land, your grain, and your wine, and your oil, the increase of your cattle, and the flocks of your sheep, in the land which he swore unto your fathers to give you.
Deuteronomy 28:8
The LORD shall command the blessing upon you in your storehouses, and in all that you set your hand unto; and he shall bless you in the land which the LORD your God gives you.
Deuteronomy 30:16
In that I command you this day 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 the LORD your God shall bless you in the land where you go to possess it.

General references

Deuteronomy 16:12
And you shall remember that you were a slave in Egypt: and you shall observe and do these statutes.
John 7:2
Now the Jews' feast of tabernacles was at hand.