Just like sacrifices in the Old Testament were submitted to the will of the priest, so must we be submissive to the will of our High Priest--Jesus Christ. . . . Romans 12:1.
The gospel of Christ can be preached from every book of the Bible--even Leviticus.
Art Azurdia's book "Connected Christianity" challenges us to neither dive into worldliness or pull away from the world, but to strategically and actively love the worldly people we come into contact with.