I always held the notion that if you accepted Jesus, yet continued to sin unrepentantly, you really never accepted Him in the first place.
I believe you are correct. This ties in with “faith without works is dead” and the parable of the sower.
In the parable of the sower, only the ones who produce fruit are saved. Many people hear the gospel and make some lip service to it, but are they producing fruit. What is this fruit? It’s the fruit of the Spirit..Love, joy, peace, etc. It is ONLY through this fruit that we do “work” for Christ.
The other thing I would also say is that only God truly knows who is saved and we can’t really judge someone else from the outside.
All in all though, I do believe that once a person is saved, has produced “fruit of the Spirit”, that their salvation is never in jeopardy. Our salvation is maintained by Christ and NOTHING can snatch us out of His hands. Like the original article posited, those of us who back slide are still going to have our works judged but our foundation is secure in Christ.
Bingo. You will know them by their fruits.
I don’t know of one believer who has never sinned after initial salvation. If they had, there would be no need for 1st John 1:9.