Thematic Bible: Passover first commemorated

And the Lord said to Moses, in the waste land of Sinai, in the first month of the second year after they had come out of the land of Egypt, Let the children of Israel keep the Passover at its regular time. In the fourteenth day of this month, at evening, you are to keep it at the regular time, and in the way ordered in the law. read more.
And Moses gave orders to the children of Israel to keep the Passover. So they kept the Passover in the first month, on the fourteenth day of the month, at evening, in the waste land of Sinai: as the Lord gave orders to Moses, so the children of Israel did.