Too many people - also musicians - out there do not really care much about the lyrics of a song. Urban is not one of them. He puts a lot of thoughts and emotion into his lyrics, though it might not always be obvious at first glance. But as good as the music mostly is, the lyrics are right up there too! Well, except the album "Nosferatu" (Bloodbound) probably, but Urban did not write much of the lyrics there.
So, take your time, read the lyrics and explore Urban's view on topics like religion, governments, the apocalypse, etc. A few threads on his official forum at www.urbanbreed.com are worth searching for to get more insight on the lyrics as the man revealed his intentions there.