Who first taught that believers are not under law but under grace?

Les explains that the whole theme of Galatians is that we are not under law but under grace. He notes this statement came straight from the lips of the Apostle Paul, first and foremost, and was an unknown tenet up until that time. Even Peter for the most part had no comprehension of this great move of God to come away from Israel and the covenant promises, and go out to the whole world—black and white, rich and poor, east and west, Jew or Gentile—with the gospel of the grace of God. Les also points out that some claim there is no difference between Peter’s message and Paul’s, but he sees the difference as daylight and dark, and notes Peter himself wrote that Paul’s writings contain things hard to be understood.