Numbers 9:10
10 “Speak to the people of Israel, saying, If any one of you or of your descendants is unclean through touching a dead body, or is on a long journey, he shall still keep the Passover to the Lord.
Numbers 9:13
13 But if anyone who is clean and is not on a journey fails to keep the Passover, othat person shall be cut off from his people because he did not bring the Lord’s poffering at its appointed time; that man shall bear his sin.