“Please remember: What we see as “lukewarm Christians” are often people who don’t get it right the first go-around, and if you think elbowing them towards “real-radical-living” is the way to go, you’ve hit Pharisee-land. In other words: a work of the flesh only incites flesh, and dies just as quickly.
Not every Christian will get beyond Phase One, either. We can only try to love them to a better place, but we cannot guilt-fear-shame them, because that doesn’t last. Yes, it can be heartbreaking to see someone waste their life: but this is God’s experience of us every single nanosecond of His eternal existence, and He patiently pursued you. He will pursue them, too. You just do your part to trust Him and obey Him.”
— from this post