And look that thou make them after their pattern, which was shewed thee in the mount.
Thus was all the work of the tabernacle of the tent of the congregation finished: and the children of Israel did according to all that the Lord commanded Moses, so did they.
According to all that the Lord commanded Moses, so the children of Israel made all the work. And Moses did look upon all the work, and, behold, they had done it as the Lord had commanded, even so had they done it: and Moses blessed them.

Exodus 25:40, 39:32, 42-43

The heavenly pattern of the sanctuary was built on earth perfectly to the details. And Moses by the Spirit of God was able to communicate the pattern to those that did the work, and they did not add their own intelligence to it. If it was not as God shewed him on the mount, then God could not dwell in it no matter how much it cost or how many years it took in the making. Salvation is only in that where God’s pattern is strictly followed. Our God is infinite in wisdom and knowledge, with him nothing happens by accident. He is the perfection of details. Blessed be his holy name.