With the Father's guidance and the Holy Spirit living within, we can live a life that is impossible for those who do not know Christ. It is no longer I who live, but Christ living His life in me that makes the Christian life possible. For whoever will be ashamed of me and of my words in this adulterous and sinful generation, the Son of Man also will be ashamed of him, when he comes in the glory of his Father with the holy angels. This is a very serious business for it has to do with our eternal life. Life on earth is short but the next life is for ever and ever.
Life here is only a preparation for the next one.
So let us be serious and take a look at what Jesus said. Great care must be used in applying this command. It does not mean to make a list of things we are not to do. For the people who make such lists often do not show Christ in their lives. To deny ourselves means to turn our backs on the things of the world.