Numbers 9:5
“And they kept the passover on the fourteenth day of the first month at even in the wilderness of Sinai: according to all that the Lord commanded Moses, so did the children of Israel.”
In the fourteenth day of this month, at even, ye shall keep it in his appointed season: according to all the rites of it, and according to all the ceremonies thereof, shall ye keep it.
And Moses spake unto the children of Israel, that they should keep the passover.
And they kept the passover on the fourteenth day of the first month at even in the wilderness of Sinai: according to all that the Lord commanded Moses, so did the children of Israel.
And there were certain men, who were defiled by the dead body of a man, that they could not keep the passover on that day: and they came before Moses and before Aaron on that day:
And those men said unto him, We are defiled by the dead body of a man: wherefore are we kept back, that we may not offer an offering of the Lord in his appointed season among the children of Israel?
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“And they departed from Rameses in the first month, on the fifteenth day of the first month; on the morrow after the passover the children of Israel went out with an high hand in the sight of all the Egyptians.”
“And they took their journey from Elim, and all the congregation of the children of Israel came unto the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after their departing out of the land of Egypt.”
“And Aaron the priest went up into mount Hor at the commandment of the Lord, and died there, in the fortieth year after the children of Israel were come out of the land of Egypt, in the first day of the fifth month.”
“And all the congregation of the children of Israel journeyed from the wilderness of Sin, after their journeys, according to the commandment of the Lord, and pitched in Rephidim: and there was no water for the people to drink.”
“At the commandment of the Lord the children of Israel journeyed, and at the commandment of the Lord they pitched: as long as the cloud abode upon the tabernacle they rested in their tents.”