Deuteronomy 16:15

15 Seven days shalt thou celebrate feasts to the Lord thy God in the place which the Lord shall choose: and the Lord thy God will bless thee in all thy fruits, and in every work of thy hands, and thou shalt be in joy.

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 celebrate the solemnity also of tabernacles seven days, when thou hast gathered in thy fruit of the barnfloor and of the winepress.

14 And thou shalt make merry in thy festival time, thou, thy son, and thy daughter, thy manservant, and thy maidservant, the Levite also and the stranger, and the fatherless and the widow that are within thy gates.

15 Seven days shalt thou celebrate feasts to the Lord thy God in the place which the Lord shall choose: and the Lord thy God will bless thee in all thy fruits, and in every work of thy hands, and thou shalt be in joy.

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, in the feast of weeks, and in the feast of tabernacles. No one shall appear with his hands empty before the Lord:

17 But every one shall offer according to what he hath, according to the blessing of the Lord his God, which he shall give him.