וּבְצַלְאֵל בֶּן אוּרִי בֶן חוּר לְמַטֵּה יְהוּדָה עָשָׂה אֵת כָּל אֲשֶׁר צִוָּה יְהֹוָה אֶת משֶׁה
Bezalel, son of Uri, son of Hur, of the tribe of Judah, had made all that the Lord had commanded Moses (Pekudei 38:22)
Rashi notes that the verse should have said that Betzalel did all that Hashem had commanded him (ie Betzalel). Instead it states that Betzalel did all that Hashem had commanded Moshe. Rashi explains that Moshe told Betzalel to build the vessels of the Mishkana nd only then to build the actual tabernacle. Betzalel questioned this order by pointing out that people first buy a house before they buy furnishings. Moshe admitted to Betzelel that Hashem had in fact commanded Moshe to first build the Tabenacle and only then to build the furnishings. Moshe then says that it seems as if Betzalel was standing in God's shadow ("Btzel Kel") for him to know those specifics.
We have to understand what was the difference of opinion between Moshe and Betzalel in terms of the order of comnstruction. and perhaps more fundamentally: why did Moshe diverge from Hashem''s command?
The actual Tabernacle was the basic unit of the Mishkan. It housed everything else and was the foundation of everything. On the other hand it was not as impressive or ornate or aesthetically inspirational. Moshe knew that the people were impressed by how things looked. He was worried how the Jews would respond if the first product of their efforts was a wooden tent covered with cloth. In order to inspire the people he wanted to start with the more impressive vessels, such as the Aron or the Menorah.
Betzalel knew better. Moshe was right: People are impressed by the aesthetics. But they need to be taught to that we start with the fundamentals. They may not be as exciting or inspirational, but they are the basis upon which all other beautiful things can be built and housed.
This message is so important for teachers, parents, spouses and really all of us to understand and live by: Fundamentals first. And from there we build the edifics into which we can add beauty, inspiration and aesthetics.