From Bonar's biography of McCheyne:
There is a wide difference between preaching doctrine and preaching Christ (p. 72).
I wonder how many pastors are guilty of having very doctrinal messages that don't have much of Christ in them?
I struggle with this to some degree because I am convinced that not every passage is about Christ, contrary to some of our well meaning friends.
I am reminded of what my systematic theology professor used to say in quoting someone else about allegorizing and spiritualizing the OT: I am pretty sure some of those nails in the tabernacle were there just to hold the place together.
By that he meant that we don't need see some significance in everything. Some things are just things; they are not other things.
But we, as pastors, would do well to preach Christ more fervently and more faithfully.