Numbers 9:7; Numbers 9:13

7 and said to Moses, “We have become unclean because of a dead body, but why should we be kept from presenting the LORD’s offering with the other Israelites at the appointed time?”

13 But if anyone who is ceremonially clean and not on a journey fails to celebrate the Passover, they must be cut off from their people for not presenting the LORD’s offering at the appointed time. They will bear the consequences of their sin.