Deuteronomy 16:15
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.
Cross-reference
Leviticus 23:36–42
Citation
Leviticus 23:36-42 gives the original institution of the Feast of Booths—the same feast commanded here.
Numbers 29:12–38
Historical context
Numbers 29:12-38 details the offerings for the Feast of Booths—supplementary to the command here.
Leviticus 23:40
Historical context
In Leviticus 23:40, the same Feast of Tabernacles commands rejoicing with branches, directly connecting to this feast's joy and blessing.
Nehemiah 8:9
Historical context
In Nehemiah 8:9, the people are told not to mourn on a holy day, leading to the reinstitution of the Feast of Tabernacles as commanded here.