Have you ever heard of a pastor going to a church (which has not advertise for a pastor) who thinks he is the man for that church. Have you ever heard of a man doing that.
Unfortunately, yes. Those who tell the congregation such a thing should rightly be regarded with enormous suspicion.
Thinking about the scenario another way:
If I believed that God had called me to be a pastor of a certain church - and it was told to me in a way that I had NO DOUBTS - I would be obedient and go to that church. However, I would NOT tell anyone what I believed God had told me. I would instead join the church and put myself to work serving the neediest people in the congregation. As the church trusted me as a minister, I would take on more responsibility - as the church requested it - and be content serving quietly.
If God has called me to the church, then He is also going to eventually get His will worked on in the congregation so that I would be seen as a candidate, or even the obvious church. Instead of angling for a position or paycheck, trust God to work out His will. God may have you serve the church without EVER getting paid for it, and that's okay.
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I've actually thought this through quite carefully since in 1988, I was driving by a church building with a friend of mine when I was out of town. My friend mentioned that he had visited the church and thought it was a dynamic congregation. While he was telling me that, I had an extremely strong sense that I was called to serve that church as the college/young adult Sunday School leader in the future, even though I had never done anything quite like that before - I had been pastoring.
Flash forward two year later and I had ended up moving to the area. The first Sunday I was there, I visited the church. I ended up meeting the Education Minister after worship. He asked about me and I told him I had just moved to town. That was it. Two days later, he called me and asked if he could come by and visit. At that time he told me that God had clearly indicated to him that I should be the college/young adult Sunday School teacher. He was surprised by the revelation because it had never happened that way before. I told him of my experience two years before and we just stared at each other for a moment. I started the next Sunday.
If God can do that for a Sunday School position, then God can certainly do that for a pastoral position.