Exodus 12:4

4 If any household is too small for a whole lamb, they must share one with their nearest neighbor, having taken into account the number of people there are. You are to determine the amount of lamb needed in accordance with what each person will eat.

Exodus 12:4 in Other Translations

KJV
4 And if the household be too little for the lamb, let him and his neighbour next unto his house take it according to the number of the souls; every man according to his eating shall make your count for the lamb.
ESV
4 And if the household is too small for a lamb, then he and his nearest neighbor shall take according to the number of persons; according to what each can eat you shall make your count for the lamb.
NLT
4 If a family is too small to eat a whole animal, let them share with another family in the neighborhood. Divide the animal according to the size of each family and how much they can eat.
MSG
4 If the family is too small for a lamb, then share it with a close neighbor, depending on the number of persons involved. Be mindful of how much each person will eat.
CSB
4 If the household is too small for a [whole] animal, that person and the neighbor nearest his house are to select one based on the combined number of people; you should apportion the animal according to what each person will eat.

Exodus 12:4 Meaning and Commentary

Exodus 12:4

And if the household be too little for the lamb
That they cannot eat it up at once; let him and his neighbour next unto his house take it according to the
number of the souls;
which Josephus F5 says were never fewer than ten, and were often twenty, but no man might feast alone; with which agrees the Jewish canon F6,

``they do not kill the passover lamb for a single person, nor even for a society consisting of one hundred, that cannot eat the quantity of an olive:''
every man according to his eating shall make your count for the lamb:
that is, a man must reckon up how many he has in his own house to eat of the lamb, and what their appetites be, by which he will he able to judge whether he can dispense with a lamb himself, or whether he must take in some of his neighbours, and how many, so as to eat up the whole lamb, for, for such persons the lamb was to be slain. The rule is,
``if a man slays it for those that do not eat of it, or for those that are not counted, for the uncircumcised, and the unclean, it was wrong, and not allowed of F7.''
The taking in his neighbours may respect the call of the Gentiles to partake of Christ with the Jews, see ( Ephesians 3:5 Ephesians 3:6 ) .
FOOTNOTES:

F5 De Bello Jud. l. 6. c. 9. sect. 3.
F6 Misn. Pesach. c. 8. sect. 7.
F7 lbid. c. 5. sect. 3.

Exodus 12:4 In-Context

2 “This month is to be for you the first month, the first month of your year.
3 Tell the whole community of Israel that on the tenth day of this month each man is to take a lamb for his family, one for each household.
4 If any household is too small for a whole lamb, they must share one with their nearest neighbor, having taken into account the number of people there are. You are to determine the amount of lamb needed in accordance with what each person will eat.
5 The animals you choose must be year-old males without defect, and you may take them from the sheep or the goats.
6 Take care of them until the fourteenth day of the month, when all the members of the community of Israel must slaughter them at twilight.