The lampstand was made out of hammered gold. From its base to its blooms it was made out of hammered gold. The lampstand was made exactly like the pattern the Lord had shown Moses.
They serve at a sacred tent. But it is only a copy and shadow of what is in heaven. That’s why God warned Moses when he was about to build the holy tent. God said, “Be sure to make everything just like the pattern I showed you on the mountain.” (Exodus 25:40)
So the copies of the heavenly things had to be made pure with these sacrifices. But the heavenly things themselves had to be made pure with better sacrifices.