Observe the very detail description of the tabernacle design in this chapter.
Exodus 25:40 And look that thou make them after their pattern, which was shewed thee in the mount.
And perhaps the most important doctrine is that God is present with us, and doesn’t leave us without His word and commands.
Exo 25:8 And let them make me a sanctuary; that I may dwell among them.
Exo 25:16 And thou shalt put into the ark the testimony which I shall give thee.
Exo 25:21 And thou shalt put the mercy seat above upon the ark; and in the ark thou shalt put the testimony that I shall give thee.
Exo 25:22 And there I will meet with thee, and I will commune with thee from above the mercy seat, from between the two cherubims which are upon the ark of the testimony, of all things which I will give thee in commandment unto the children of Israel.
Rainbow Trout 