Chapter 39: Holy Garments
Holy Garments are made for Aaron and his priests, under the instructions given to Moses by God. The Tabernacle is finished and Moses blesses the people.
Chapter 40: Temple Washing
After completing the temple, Aaron and his priests go into the temple and are washed and anointed and given an everlasting priesthood.
The children of Israel are guided by a cloud in the sky. When the cloud was taken up into the skies, the children of Israel knew to move forward on their journey. But when the cloud descended upon them they knew to stop and not journey until it was taken up again. (Exodus40:36-37)
The cloud in the sky was to light up the tabernacle by day and fire by night.