1 Cor 3 and Matt 7 speak about the judgment of Christ. 1 Cor 3 is a judgment for believers, and Matt 7 for false converts. MacArthur, Comfort, and Lordship types automatically assume because one is in the flesh and has no visible fruit they are a false convert, and while this may be true, its not the entire story. Perhaps many that are labeled false converts are disobedient and flesh driven believes whom will have no reward in Heaven, at least this is the message that Erwin Lutzer, and Charles Stanley have preached in their books. Perhaps we may never know this side of eternity on the difference between the two. But I know in my own situation there was a time when I was big in self-help, and walked in the flesh. Perhaps I would have been labeled a false convert in a Lordship church, but the Holy Spirit has grown me, and I strive to walk in the spirit and not the flesh. My works do not earn my salvation, as they only provide evidence for it. Every true believer will have works (other than those that accept Christ on their deathbed) but works are not what saves someone. I lacked works and fruit in the past as I was in the flesh and not the spirit.