Deuteronomy 16:13-15 -

The Feast of Tabernacles , properly, Booths (cf. Leviticus 23:33-44 ; Numbers 29:12-38 ). This feast was to be observed at the end of harvest, after the corn had been gathered into granaries, and the produce of the vineyard had been put through the press. Nothing is added here to the instructions already given respecting this festival; only the observance of it at the appointed sanctuary is enforced, and stress is laid on their making not only their sons and daughters and domestics, but also the Levite, the fatherless, the widow, and the stranger participators in their rejoicings. Thou shalt surely rejoice; rather, thou shalt be wholly joyous ; literally, rejoicing only ; Rosenm; " adnodum laetus ."