'Keep the Passover' in the Bible
If a stranger living temporarily among you wishes to celebrate the Passover to the Lord, all his males must be circumcised, and then he may participate and celebrate it like one that is born in the land. But no uncircumcised person may eat it.
“The sons of Israel are to keep the Passover at its appointed time.
But there were certain men who were [ceremonially] unclean because of [touching] the dead body of a man, so they could not observe the Passover on that day; so they came before Moses and Aaron that same day.
“Say to the Israelites, ‘If any one of you or of your descendants becomes [ceremonially] unclean because of [touching] a dead body or is on a distant journey, he may, however, observe the Passover to the Lord.
But the man who is [ceremonially] clean and is not on a journey, and yet does not observe the Passover, that person shall be cut off from among his people [excluding him from the atonement made for them] because he did not bring the Lord’s offering at its appointed time; that man will bear [the penalty of] his sin.
If a stranger lives among you as a resident alien and observes the Passover to the Lord, in accordance with its statutes and its ordinances, so shall he do; you shall have one statute, both for the resident alien and for the native of the land.’”
“Observe the month of Abib and celebrate the Passover to the Lord your God, for in the month of Abib the Lord your God brought you out of Egypt by night.
Then the king commanded all the people, saying, “Celebrate the Passover to the Lord your God as it is written in this book of the covenant.”
Hezekiah sent word to all Israel and to Judah and also wrote letters to Ephraim and Manasseh to come to the house of the Lord at Jerusalem to celebrate the Passover Feast to the Lord God of Israel.
For the king and his officials and all the assembly in Jerusalem had decided to celebrate the Passover in the second month,
So they decided to circulate a proclamation throughout Israel, from Beersheba to Dan, that the people were to come to celebrate the Passover to the Lord God of Israel, at Jerusalem. For they had not celebrated it in great numbers as it was prescribed [for a long time].
So all the service of the Lord was prepared on that day to celebrate the Passover, and to offer burnt offerings on the altar of the Lord, in accordance with the command of King Josiah.
He said, “Go into the city to a certain man, and say to him, ‘The Teacher says, “My time [to suffer and atone for sin] is near; I am to keep the Passover at your house with My disciples.”’”