4 These are the feasts of the YeHoVaH, even holy convocations, which ye shall proclaim in their seasons. 5  In the fourteenth day of the first month at even is the YeHoVaH Passover. Leviticus 23:4,5

1  Observe the month of Abib, and keep the Passover unto the YeHoVaH thy God: for in the month of Abib the YeHoVaH thy God brought thee forth out of Egypt by night. 2  Thou shalt therefore sacrifice the Passover unto the LORD thy God, of the flock and the herd, in the place which the YeHoVaH shall choose to place his name there. Deuteronomy 16:1,2