There's nothing wrong with overcoming sin, but it is not the gospel.
This is the gospel:
1Corinthians 15:1-5: Now I would remind you, brothers, of the gospel I preached to you, which you received, in which you stand, and by which you are being saved, if you hold fast to the word I preached to you—unless you believed in vain. For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures, and that he appeared to Cephas, then to the twelve.
None of it is anything he teaches in his false gospel threads. Abstaining from sin is a good thing, but it will not save anyone initially, or maintain their salvation over time. His teaching adds to the gospel, making it false.
Yours is an interesting post, SeventyOne, but if I were a novice, as I once was, I would be left with abundant questions and no place to go with it. It reminds me of seeing signs that read, "Jesus saves." I wanted to be saved, but reading the sign didn't give me anywhere to go: I was still lost. Yes, I believed that Jesus saves even then, but I didn't know what He saved me from, how He saved me, or what He saved me to (insert object of preposition here, since we all hate dangling preps - like save to DO something, saved to BE something, saved to LOCATION, like heaven.) I simply didn't know and the words didn't make any of it make sense.
Because of that, I suggest that there is more to the gospel than that.
In looking in the Scriptures for most of half a century, I found that prepositional object. And it makes the good news of Jesus' death, burial, and resurrection, His post-resurrection interactions with the apostles and others, and the resulting spread of the good news make sense and also ties it in with what God has intended from the beginning (Genesis) in desiring a relationship with the people He created. And honestly, in reading almost everywhere, that believing, that faith, that trust, that confidence, is expressed in actions probably more than it is in statements regarding philosophy. I won't site every one of them, but in reading the last few days in Peter, James, and John, it almost looks like they are quite content to discuss what we DO as proof of what we BELIEVE. I'm reading in Psalms this morning and noticed that David does the same thing in the Psalms (generally reading around 110-115). And Luke described that Elizabeth and Zacharias were righteous before God pre-Jesus' death, burial, and resurrection, but in fact, we do realize that they also still needed that sacrifice for their sins, their righteousness being in fact a description of their
obedience to what God told us to do (and be), a life of holiness. David in the Psalms also manages to express the same struggles between walking uprightly and needing to be saved from our own willfulness. Over the years I've realized that's just the balance of human life, and the Scriptures encourage us to walk uprightly, to repent when we don't, to get back on track, and to keep going - all in the strong confidence that Jesus died for our sins according to the Scriptures, and abides our High Priest forever.
I don't tend to take a proof text out here and there, because it's been a source of division between those of us who desire to know the whole counsel of God. What I find is that when we take one part and insist on whatever that one part says as the whole, we miss the mark and blind ourselves to what the rest is saying. God speaks to our whole life, with the goal of having us HIS. The book of the Revelation as well as many other places in Scripture reminds me that He indeed has a judgement reserved for all of us, we do need to answer to the deeds done in the body, Jesus did tell us that some would be left out (like the virgins without the extra oil, like the person who takes what was entrusted to him by His master and fails to work with it to increase what the Master wanted, like the vines trimmed off that aren't producing fruit), Peter reminds us to add all diligence to make our calling and election sure. In writing this reply to you, my heart's goal is to encourage others as well as myself to keep looking, keep seeking, keep reading, and keep growing in grace and in the knowledge of our Lord and Savior Jesus Christ. How blessed we are to have the Scriptures to read for ourselves! Keep reading all of it - we can live by His words!