Leviticus 23:5-7

Young's Literal Translation

⁵ in the first month, on the fourteenth of the month, between the evenings, [is] the passover to Jehovah;

⁶ and on the fifteenth day of this month [is] the feast of unleavened things to Jehovah; seven days unleavened things ye do eat;

⁷ on the first day ye have a holy convocation, ye do no servile work;