We cannot make blanket statements such as, "New Testament False Teaching is _______."  It depends on the context, who it was, and where they were on their journey.  This is most dramatically true with the Apostle Paul.  In one afternoon, teaching he'd called false until that point became his new truth, and what he'd thought was true his whole life he realized was wrong.  Paul shows us that you can spend your entire life "serving the Lord" and have never met Jesus.  We are all one encounter/revelation away from our truth changing dramatically, so let us hold our current truths lightly as we continue to grow!