A while ago I blogged about Tullian Tchividjian–Billy Graham's grandson and the successor to William Kennedy as the pastor of Coral Ridge Presbyterian Church"–and his reaction to Lutheran novelist Bo Giertz. (He offered a clarification to that post: "I didn't say that Giertz caused a Copernican revolution in my preaching but that the conversation between Henrik and Linder described the Copernican revolution that took place in my preaching a number of years ago.")
He since has written an interesting post about vocation:
I urge you to go to the site and also consider the discussion in the comments. Some people pushed back against the doctrine of vocation, insisting that spreading the Gospel is the only way we truly serve God, with others citing the influence of Lutheran theology on their evangelicalism (contrary to an earlier discussion about how that doesn't happen much!).
By the way, do you see anything missing in this particular account of vocation?