A man is Saved by God's Grace. There is no sin which can reverse what God does and that's why no man can take a saved person away from Jesus or God. If there is some sin you could commit after being Born Again by the Spirit, then you could not be saved to start with because that would violate what Jesus guarantees and contradict His assertion. Grace is an awesome thing when you really start to see how it works. Mormons don't want grace unless they can earn it after all that they can do ...
Mormons aren’t the only “earned grace” groups around here, MHG. Day in. Day out. “On the road to being saved”. It’s a real heartbreaker.