Deuteronomy 16:15

15 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.

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 "Thou shalt observe the Feast of Tabernacles seven days, after thou hast gathered in thy corn and thy wine;

14 and thou shalt rejoice in thy feast, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite, the stranger, and the fatherless, and the widow, who are within thy gates.

15 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.

16 Three times in a year shall all thy males appear before the LORD thy God in the place which He shall choose: in the Feast of Unleavened Bread, and in the Feast of Weeks, and in the Feast of Tabernacles. And they shall not appear before the LORD empty;

17 every man shall give as he is able, according to the blessing of the LORD thy God which He hath given thee.