1 The Lord spoke to Moses in the desert of Sinai, in the second year after they departed from the land of Egypt, in the first month, saying:
2 "Let the sons of Israel observe the Passover at its proper time,
3 on the fourteenth day of this month, in the evening, according to all of its ceremonies and justifications."
4 And Moses instructed the sons of Israel, so that they would observe the Passover.
5 And they observed it at its proper time: on the fourteenth day of the month, in the evening, at mount Sinai. The sons of Israel acted according to all the things that the Lord had commanded Moses.
6 But behold, certain ones, who were not able to observe the Passover on that day, being unclean because of the life of a man, approaching Moses and Aaron,
7 said to them: "We are unclean because of the life of a man. Why have we been cheated, in that we are not permitted to offer, at its proper time, the oblation to the Lord among the sons of Israel?"