Devarim 16:15

15 Shivat yamim shalt thou observe the chag (feast) unto Hashem Eloheicha in the place which Hashem shall choose, because Hashem Eloheicha shall bless thee in all thine increase, and in all the works of thine hands, so that thou shalt surely rejoice.

Devarim 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.

Devarim 16:15 In-Context

13 Chag HaSukkot shalt thou observe shivat yamim, after that thou hast gathered in from thy threshing floor and from thy winepress:

14 And thou shalt rejoice in thy chag (feast), thou, and thy ben, and thy bat, and thy eved, and thy amah, and the Levi, the ger, and the yatom (orphan), and the almanah, that are within thy she’arim.

15 Shivat yamim shalt thou observe the chag (feast) unto Hashem Eloheicha in the place which Hashem shall choose, because Hashem Eloheicha shall bless thee in all thine increase, and in all the works of thine hands, so that thou shalt surely rejoice.

16 Shalosh p’amim bashanah shall all thy males appear before Hashem Eloheicha in the place which He shall choose; in the Chag Matzot, and in the Chag HaShavu’os, and in the Chag HaSukkot, and they shall not appear before Hashem empty-handed:

17 Every man shall give as he is able, according to the Birkat Hashem Eloheicha which He hath given thee.