Vayikra 23:37-39

Orthodox Jewish Bible

³⁷ These are the Mo’adim of Hashem, which ye shall proclaim to be mikra’ei kodesh, to offer an offering made by eish unto Hashem‖an olah (burnt offering), and a minchah, a zevach, and nesakim, every required thing upon its day,

³⁸ Beside the Shabbatot of Hashem, and beside your mattenot, and beside all your nederim, and beside all your nedavot (freewill offerings), which ye give unto Hashem.

³⁹ Also in the fifteenth day of the seventh month, when ye have gathered in the crop of HaAretz, ye shall keep a Chag (Feast) unto Hashem shivat yamim; on the first day shall be a Shabbaton, and on the eighth day shall be a Shabbaton.