Numbers 9:4-12

4And Moses spoke to the children of Israel, that they should hold the passover.

5And they held the passover in the first [month] on the fourteenth day of the month, between the two evenings, in the wilderness of Sinai: according to all that Jehovah had commanded Moses, so did the children of Israel.

6And there were men, who were unclean through the dead body of a man, and could not hold the passover on that day; and they came before Moses and before Aaron on that day.

7And those men said to him, We are unclean by reason of the dead body of a man: why are we kept back, that we may not present the offering of Jehovah at its set time among the children of Israel?

8And Moses said to them, Stay, and I will hear what Jehovah commands concerning you.

9And Jehovah spoke to Moses, saying,

10Speak unto the children of Israel, saying, If any one of you or of your generations be unclean by reason of a dead body or be on a journey afar off, yet he shall hold the passover to Jehovah.

11In the second month, on the fourteenth day, between the two evenings, shall they hold it; with unleavened bread and bitter herbs shall they eat it.

12They shall leave none of it until the morning, nor break a bone thereof: according to every ordinance of the passover shall they hold it.