‘See that you make them according to the pattern shown you on the mountain.’
Bezalel, Oholiab and all who worked on the construction of the Tent and furniture were given skill by God (Ex.31:1-6), and God ensured that if Moses faithfully presented what he had been shown, it was done exactly so.
It was vital because all portrayed Christ as Son over God’s house. Paul taught the whole counsel of God for his service, since every detail from him must be best (Ac.20:27).
Faithfulness is always blessed.