Hebrews 10:1-2

The law is only an unclear picture of the good things coming in the future; it is not the real thing. The people under the law offer the same sacrifices every year, but these sacrifices can never make perfect those who come near to worship God. If the law could make them perfect, the sacrifices would have already stopped. The worshipers would be made clean, and they would no longer have a sense of sin.