The tent where our ancestors worshipped God was with them in the desert. This was the same tent that God had commanded Moses to make. And it was made like the model that Moses had seen.
But the tent where they serve is just a copy and a shadow of the real one in heaven. Before Moses made the tent, he was told, “Be sure to make it exactly like the pattern you were shown on the mountain!”
These things are only copies of what is in heaven, and so they had to be made holy by these ceremonies. But the real things in heaven must be made holy by something better.