Sometimes things aren’t exactly what you expect, but they can work out to benefit you. The Killers contemplate the difference between expectations and reality through a love affair between two people. Most girls imagine their future husband to look like Prince Charming, but that isn’t always the case. When The Killer use the allusion “He doesn’t look a thing like Jesus, but he talks like a gentleman”, they mean that the perfect man may not be the best looking, but he has class and respects others. They make a comparison between any average guy and the perfect being. Obviously, nobody knows exactly what Jesus looks like, but being god’s son, you can only imagine. The man talked about in the song doesn’t look anything like the girl had expected,
