What does it mean to be a Christian? Or in other words, what makes a Christian different from a non-Christian? An even more important follow up question should be asked, "what is the significance of this difference?" In Romans 8:9, we are told that Christians have the Spirit of God Himself living in them and that the non-Christians don't. That's a staggering truth with significant ramifications for life. I'm sure that most of you have heard of the Holy Spirit, but very few actually know what the Bible teaches about the significance of His ministry in the life of the believer.