Numbers 9:3
“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 the Lord spake unto Moses in the wilderness of Sinai, in the first month of the second year after they were come out of the land of Egypt, saying,
Let the children of Israel also keep the passover at his appointed season.
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.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“The fourteenth day of the second month at even they shall keep it, and eat it with unleavened bread and bitter herbs.”
“They shall leave none of it unto the morning, nor break any bone of it: according to all the ordinances of the passover they shall keep it.”
“And ye shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.”
“Three times thou shalt keep a feast unto me in the year.”
“In the fourteenth day of the first month at even is the Lord’s passover.”