en_tn_lite_do_not_use/num/16/42.md

Then it happened

This phrase is used here to mark an important event in the story. If your language has a way for doing this, you could consider using it here.

had assembled against Moses and Aaron

"had assembled to complain against Moses and Aaron"

behold, the cloud

"suddenly, the cloud." Here "behold" shows that the people were surprised by what they saw.