If sacrifice for sins was so important, why did Jesus forget to preach that kind of salvation?

Part of the problem with your ongoing issues with what Paul did 2000 years ago is that, to the best of my knowledge, you haven't addressed whether or not Jesus actually appeared to Paul on the road to Damascus. If Jesus did this, it was a pivotal moment in the history of Christianity. In fact, if that event hadn't happened, Christianity very well may not have come into being as a world-cl religion. I'm more than willing to believe that Jesus actually appeared to Paul, and that means that Jesus approved of who Paul was and was willing to forgive Paul for his past actions. Maybe the real question is "If Jesus was willing to forgive Paul, why aren't you?" Have a nice day!