The law is only a shadow of the good things that are coming. It’s not the real things themselves. That’s why the law can never, through the same sacrifices that are repeated endlessly year after year, make perfect the people who come near to worship.
They serve at a sanctuary that’s a picture and shadow of what’s in heaven. That’s why God warned Moses when he was about to build the holy tent, “When you make everything, be sure to follow the pattern I showed you on the mountain.”