Numbers 4:21

19 But thus do unto them, that they may live, and not die, when they approach unto the most holy things: Aaron and his sons shall go in, and appoint them every one to his service and to his burden:

20 But they shall not go in to see when the holy things are covered, lest they die.

And the LORD spake unto Moses, saying,

22 Take also the sum of the sons of Gershon, throughout the houses of their fathers, by their families;

23 From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.

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 LORD said to Moses,
KJV
And the LORD spake unto Moses, saying,
WEB
The LORD spoke to Moses, saying,
ASV
And Jehovah spake unto Moses, saying,
DARBY
And Jehovah spoke to Moses, saying,
BLB
And YHWH spoke to Moses, saying,
ÅB
Og Herren talte til Moses og sa:
OTB
Herren talte til Moses og sa:
B1930
Og Herren talte til Moses og sa:

Study notes (Tyndale)

Original text and word study