Numbers 9:13-14

13“But the person who is clean and not away on a journey, yet neglects to celebrate Passover, that soul shall be cut off from his people because that person did not present Adonai’s offering at the appointed time. That man will bear his sin.

14“If an outsider living among you would celebrate Passover to Adonai according to the requirement, so he should do. There will be for you the same regulation for the outsider and the native of the land.’”