Танах к Дварим 16:16

שָׁל֣וֹשׁ פְּעָמִ֣ים ׀ בַּשָּׁנָ֡ה יֵרָאֶ֨ה כָל־זְכוּרְךָ֜ אֶת־פְּנֵ֣י ׀ יְהוָ֣ה אֱלֹהֶ֗יךָ בַּמָּקוֹם֙ אֲשֶׁ֣ר יִבְחָ֔ר בְּחַ֧ג הַמַּצּ֛וֹת וּבְחַ֥ג הַשָּׁבֻע֖וֹת וּבְחַ֣ג הַסֻּכּ֑וֹת וְלֹ֧א יֵרָאֶ֛ה אֶת־פְּנֵ֥י יְהוָ֖ה רֵיקָֽם׃

Три раза в год все мужи твои предстают пред Господом Богом твоим на месте, которое изберет Он; в праздник опресноков и в недели, и в праздник скиний; и они не предстанут пред Господом пустыми;

Exodus

You must keep the festival of Matzos. You must eat matzos for seven days, as I have commanded you. [This festival must be celebrated] at the appointed time, during the month when the grain is ripened, for in it [at this time] you went out of Egypt. Do not appear before My Presence empty-handed.

Leviticus

Indeed, on the fifteenth day of the seventh month, when you gather the produce of the land you shall celebrate the festival of Adonoy for seven days. The first day is a day of rest and the eighth day is a day of rest.