On the day that the tabernacle was set up, the cloud covered the tabernacle, the tent of the testimony. And at evening it was over the tabernacle like the appearance of fire until morning. So it was always: the cloud covered it by day and the appearance of fire by night.
Numbers 9:15-16

There's a great example of parallelism in this passage:
v15 - On the day it was set up - A cloud covered the tabernacle by day - Was like fire at night
v16 - So it continued - A cloud covered it by day - Looked like fire at night

#biblepatterns