Princeton and Preaching

How does one know whether God is calling a man to the pastoral ministry? Are we aware of the moral, intellectual, and physical qualifications needed for the Christian ministry? What are the best methods of sermon preparation and should the preacher pay as much attention to preparing his own heart as to preparing the message he is to preach? On what kinds of subjects should a pastor preach, and how should such preaching be done? What is really involved in being a shepherd of Christ’s flock? Do we know what kinds of discouragements and encouragements face the pastor in his ministry?