Then Moses called for all the elders of Israel and said to them, “Go and take for yourselves lambs according to your families, and slaughter the Passover lamb.
On the fourteenth day of this month, at twilight, you shall celebrate it at its appointed time; you shall celebrate it in accordance with all its statutes and all its ordinances.”
And they celebrated the Passover in the first month, on the fourteenth day of the month, at twilight, in the wilderness of Sinai; in accordance with everything that the Lord had commanded Moses, so the sons of Israel did.