Romans 12:2 And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.
Often when the Bible speaks of “the world,” it isn’t speaking of the planet we inhabit but rather a culture, the culture of the world. The Bible says, “For all that is in the world, the lust of the flesh, the lust of the eyes, and the pride of life, is not of the Father but is of the world” (1 John 2:16).
Another version puts the same verse this way: “For the world offers only a craving for physical pleasure, a craving for everything we see, and pride in our achievements and possessions. These are not from the Father, but are from this world.
You can take every sin you’ve ever committed and put it in one of three categories: (1) the lust of the flesh, which is physical desire, (2) the lust of the eyes, that which we see and want, or (3) the pride of life.
These are the sins that trapped Eve in the Garden of Eden: “So when the woman saw that the tree was good for food, that it was pleasant to the eyes, and a tree desirable to make one wise, she took of its fruit and ate” (Genesis 3:6). She saw the fruit was “good for food” (the lust of the flesh), it was “pleasant to the eyes” (the lust of the eyes), and “desirable to make one wise” (the pride of life). We fall into these sins as well.
When the apostle Paul said, “Do not be conformed to this world” (Romans 12:2), he was effectively saying, “Christian, don’t allow yourself to be turned into something you’re not”. To put it in modern terms, don’t be a poser. Don’t act like you’re not a believer just to be accepted. Don’t be conformed to this world.