That easy feeling of finally being mature enough to be at ease in the company of the ungodly is sometimes a sign, not of letting 'your spiritual life be natural and your natural life be spiritual', but of sin. Beware this feeling of enjoying a fresh sense of honesty and frankness. It could be that in getting relevant and missional by talking their language and singing their songs, you haven't just found your incarnational place in the world, but rather, as Screwtape says: 'The world has found its place in you.' Maybe it's time to load up that old Keith Green CD onto your iPOd and wear one of those embarrassing Jesus T-shirts.