James Jordan says:
Second, by no means are all pastors, teachers, and preachers gifted as exegetes or expositors. Pastors are curates of souls primarily. Teachers often are called to pass on the heritage of the faith, not rework it for modern times. One of the errors I encountered in seminary was the notion that all pastors should develop their sermons out of an in-depth exegesis from the original Hebrew and Greek. Virtually nobody ever does this, of course, but it was held out as an ideal. There is nothing ideal about it, however. Preachers need to pass on the heritage of the church to their people, with a pastoral eye to their psychological and spiritual situation. If they get their homilies by borrowing from Spurgeon, or from other people’s outlines — what’s wrong with that?