In the Church of England, you have to prove to the selectors that you believe God has chosen you to be a priest otherwise they will not consider you for ordination. Therefore, unless you are prepared to lie (which I expect some are) you must truly believe that you have been chosen by God. If the Church, as in my case, later decides that you should no longer be a priest it really messes with your head and your faith. Did God lie to me? Did I lie to myself? Does God even exist? You just do not have these problems if you get the sack from any other job.