But just as he who called you is holy, so be holy in all you do;
The word holy means to be seperated. Sometimes it is translated sanctification. So, the opposition to conforming to our evil desires is to set ourselves apart. To be like the one who is set apart.
Some people get confused about this holiness. When they begin to set themselves apart, they end up entirely setting themselves apart from the world. Jesus tells us that we are to be in the world but not of it. There is a difference. That is why I wanted to point out that we are to be set apart from the evil desires, the way we used to live.