(3) But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints; (4) Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks. (5) For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.
It is almost as if Paul is saying, "The reason you shouldn't live at all like the world is because we know that the world does not have an inheritance with God. Why then, should we, as believers, desire to live like those who will not gain the kingdom of God?" And that is a very good question - yet how often do we think of it like that? For a moment, let us get our eyes off the temporal and onto the eternal. These people who live with "no rules" and are enjoying a free and loose life however they please, enjoying the sins of the world for a season, do not have the hope of eternal life (unless they change). These people are hiding their pain, hopelessness, and hurt of defeat - and yet we want to be like them? We need to raise our sights higher: on God and Christ Jesus. Instead of allowing ourselves to flippantly be followers of the world, we must choose to be followers of Christ (vs. 1-2). If we find ourselves desiring to do and be like the world, how we must tear our focus away from that and instead turn it to Christ!!