Hebrews 10:1

Hebrews 10:1. For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.

A man could go to the Levitical sacrifices twenty years running, and yet be no forwarder. He must go again and again as long as he lived. They were only figures and shadows and types; the real sacrifice is Christ.