They kept the passover in the wilderness Where they rested almost a whole year; but after they removed from thence, they were in so unsettled a condition that they did not even circumcise their children, (Joshua 5:5,) who consequently could not eat the passover, Exodus 12:48.
Related Commentaries of Numbers 9:5
Numbers 9:5
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.