Numbers 3:20

18 These were the names of the sons of Gershon by their clans: Libni and Shimei.

19 The sons of Kohath by their clans were Amram, Izhar, Hebron, and Uzziel.

And the sons of Merari by their clans were Mahli and Mushi. These were the clans of the Levites, according to their families.

21 From Gershon came the Libnite clan and the Shimeite clan; these were the Gershonite clans.

22 The number of all the males a month old or more was 7,500.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
And the sons of Merari by their clans were Mahli and Mushi. These were the clans of the Levites, according to their families.
KJV
And the sons of Merari by their families; Mahli, and Mushi. These are the families of the Levites according to the house of their fathers.
WEB
The sons of Merari by their families: Mahli and Mushi. These are the families of the Levites according to their fathers’ houses.
ASV
And the sons of Merari by their families: Mahli and Mushi. These are the families of the Levites according to their fathers` houses.
DARBY
And the sons of Merari according to their families: Mahli and Mushi. These are the families of the Levites according to their fathers' houses.
BLB
And the sons of Merari by their clans: Mahli and Mushi. These are the clans of Levi, by the houses of their fathers.
ÅB
Og Meraris sønner etter sine slekter var Mahli og Musi. Dette var Levis slekter med sine familier.
OTB
Meraris sønner etter deres familier var Mahli og Musji. Dette er Levis familier etter deres fedres hus.
B1930
Og Meraris sønner efter sine ætter var Mahli og Musi. Dette var Levis ætter med sine familier.

Study notes (Tyndale)

Original text and word study

Cross references