Deuteronomy 16:15

15 Seven days you must perform the festival for the LORD your God in the location the LORD selects because the LORD your God will bless you in all you do and in all your work. You will be overjoyed.

Deuteronomy 16:15 Meaning and Commentary

Deuteronomy 16:15

Seven days shalt thou keep a solemn feast unto the Lord thy
God
The feast of tabernacles still spoken of:

in the place which the Lord thy God shall choose:
the city of Jerusalem:

because the Lord thy God shall bless thee in all thy increase, and in
all the works of thine hands;
both in the increase of their fields, vineyards, and oliveyards, and also in their several handicraft trades and occupations they were employed in; so Aben Ezra interprets all the works of their hands of merchandise and manufactories:

therefore thou shalt surely rejoice;
extremely, heartily, and sincerely, and not fail to express joy on this occasion, and manifest it by a generous freewill offering to the Lord, and a bountiful entertainment for himself, his family, friends, and others.

Deuteronomy 16:15 In-Context

13 Once you have collected the food and drink you need, perform the Festival of Booths for seven days.

14 Celebrate your festival: you, your sons, your daughters, your male and female servants, the Levites, the immigrants, the orphans, and the widows who live in your cities.

15 Seven days you must perform the festival for the LORD your God in the location the LORD selects because the LORD your God will bless you in all you do and in all your work. You will be overjoyed.

16 Three times a year every male among you must appear before the presence of the LORD your God in the location he will select: at the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Booths. They must not appear before the LORD's presence empty-handed.

17 Each one should have his gift in hand, in precise measure with the blessing the LORD your God gives you.