C. F. Keil and Franz Delitzsch on Exodus 12:3-14

Exo 12:3-14

Arrangements for the Passover. - “All the congregation of Israel” was the nation represented by its elders (cf. Exo 12:21, and my bibl. Arch. ii. p. 221). “On the tenth of this (i.e., the first) month, let every one take to himself שׂה (a lamb, lit., a young one, either sheep or goats; Exo 12:5, and Deu 14:4), according to fathers’ houses” (vid., Exo 6:14), i.e., according to the natural distribution of the people into families, so that only the members of one family or family circle should unite, and not an indiscriminate company. In Exo 12:21 mishpachoth is used instead. “A lamb for the house,” בּית, i.e., the family forming a household.