And if a stranger shall sojourn among you, and will keep the passover unto the LORD; according to the ordinance of the passover, and according to the manner thereof, so shall he do: you shall have one ordinance, both for the stranger, and for him that was born in the land.
Read Chapter 9
George Leo Haydock
Stranger. Both the Jews who lived at a distance from the promised land, and those of other nations who had embraced their religion, were obliged to observe this law; while the uncircumcised were absolutely excluded. (Calmet)