Numbers 9:2-5

2“Now the sons of Israel are to 1celebrate the Passover at 2its appointed time.

3On the fourteenth day of this month, 3at twilight, you shall celebrate it at its appointed time; you shall celebrate it in accordance with all its statutes and all its ordinances.”

4So Moses 4told the sons of Israel to celebrate the Passover.

5And 5they celebrated the Passover in the first month, on the fourteenth day of the month, at twilight, in the wilderness of Sinai; 6in accordance with everything that the Lord had commanded Moses, so the sons of Israel did.