if they truly repented of their sins, and have faith, they will go to heaven. Now, with faith, comes the fruits, if somebody is exhibiting no fruits and is truly living a worldly life, then they were not saved to begin with. Salvation makes you a new creation, you can't "devolve" back into your old creation and stay that way. It's like if a pig were to be changed into a man, the man could not go back to eating slop, and, although we do go back to the slop, the Spirit convicts us. Now some people may make more meals of the slop than others, but overall, they (being saved) are still repulsed by their actions.
On the other hand, you have the lukewarm church of laodecia, where they were thought to be on fire, yet they are blind and dead. Jesus said he vomits them out of his mouth in revelations 3:14-22. None of this sounds like salvation, hence my belief that there is no "lukewarm" Christian. Granted, we all have lukewarm characteristics, and thorns in the flesh, and we are covered by grace. But to be like the laodecian church is to be lost.
Sometimes you can have a man that everybody thinks is going to heaven, but in their heart of hearts, they know they are a fraud. And sometimes you can have a man that, from the outside, is questionable in his faith, but inside he repents, turns away and then rejoices because of grace. And this man will be in the kingdom.
