From Baxter's Reformed Pastor:
The first and greatest work of ministers of Christ is acquainting men with the God who made them; He is the source of their blessing. We should open up the treasures of His goodness for them and tell them of the glory that is in His presence, a glory which all His chosen people shall enjoy. By showing men the certainty and the excellence of the promised joy, and by making them aware of the perfect blessedness in the life to come in comparison with the vanities of the present life, we may redirect their understanding and affections toward heaven. We shall bring them to the point of due contempt of this world and fasten their hearts on a more durable treasure. This is the work we should be busy with both night and day. For when we have affixed their hearts unfeignedly on God and heaven, the major part of the ministry is accomplished. All the rest will follow naturally.