וּפְקוּדֵ֖י בְּנֵ֣י גֵרְשׁ֑וֹן לְמִשְׁפְּחוֹתָ֖ם וּלְבֵ֥ית אֲבֹתָֽם׃
And those that were numbered of the sons of Gershon, by their families, and by their fathers’houses,
Read halakhic rulings (Jewish law) on Numbers 4:38: and classical halakhic sources.