Numbers 9:21

21 When the cloud continues a full month overshadowing the tabernacle, the children of Israel shall encamp, and shall not depart.

Numbers 9:21 Meaning and Commentary

Numbers 9:21

And [so] it was when the cloud abode from even unto the
morning
The whole night, during which time they rested in their beds:

and [that] the cloud was taken up in the morning, then they journeyed;
whether [it was] by day or night that the cloud was taken up, they
journeyed;
whether at morning or midnight; for sometimes, as Aben Ezra observes, they travelled in the night; whensoever their sentinels gave notice that the cloud was taken up, even though at midnight, they arose and prepared for their journey; and by this it is evident, that the appearance by day and night was the same body called the cloud, though beheld in a different view, in the daytime as a cloud, in the nighttime as fire.

Numbers 9:21 In-Context

19 And it shall be, whenever the cloud overshadows the tabernacle a number of days, they shall encamp by the word of the Lord, and shall remove by the command of the Lord.
20 And it shall come to pass, whenever the cloud shall remain from the evening till the morning, and in the morning the cloud shall go up, then shall they remove by day or by night.
21 When the cloud continues a full month overshadowing the tabernacle, the children of Israel shall encamp, and shall not depart.
22 For they shall depart by the command of the Lord: - they kept the charge of the Lord by the command of the Lord by the hand of Moses.

Footnotes 1

The Brenton translation of the Septuagint is in the public domain.