CLV(i)
3 On the fourteenth day of this month, between the evening hours, you shall observe it at its appointed time according to all its statutes, and according to all its customs shall you prepare it.
4 Then Moses spoke to the sons of Israel to observe the passover.
5 So they observed the passover in the first month on the fourteenth day of the month, between the evening hours, in the wilderness of Sinai. According to all that Yahweh had instructed Moses, so did the sons of Israel.