Leviticus 23:4-6

Young's Literal Translation

⁴ `These [are] appointed seasons of Jehovah, holy convocations, which ye proclaim in their appointed seasons:

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;