בָּ֠רִאשׁוֹן בְּאַרְבָּעָ֨ה עָשָׂ֥ר יוֹם֙ לַחֹ֔דֶשׁ יִהְיֶ֥ה לָכֶ֖ם הַפָּ֑סַח חָ֕ג שְׁבֻע֣וֹת יָמִ֔ים מַצּ֖וֹת יֵאָכֵֽל׃
正月十四日，你們要守逾越節；這是七日的節期，要吃無酵餅。
Rashi
seven days [Lit. weeks of days,] because they commence from it to count seven weeks.
Rashi
unleavened bread shall be eaten and unleavened bread shall be eaten on that festival.