Leviticus 23:39
Also in the fifteenth day of the seventh month, when ye have gathered in the fruit of the land, ye shall keep a feast unto the Lord seven days: on the first day shall be a sabbath, and on the eighth day shall be a sabbath.
Cross-references
Leviticus 23:34 introduces the Feast of Tabernacles; verse 39 gives further instructions for the same feast, continuing the passage.
Exodus 23:16 commands the Festival of Ingathering, the autumn harvest feast—the same festival described here with the fifteenth day of the seventh month.
Deuteronomy 16:13 repeats the command for the seven-day Feast of Tabernacles after harvest, directly paralleling this verse.
John 7:37 places Jesus' offer of living water at the Feast of Tabernacles, the very festival described here, showing Christ as fulfillment.
Colossians 2:16 warns against judging regarding festivals like Tabernacles, contrasting OT obligation with Christian freedom.
1 Chronicles 23:31 mentions Levitical duties at appointed festivals, which include the Feast of Tabernacles described here.