Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine, 2nd Timothy 4:2.
The Apostle Paul admonished men to preach with two things, longsuffering and doctrine. I refer to myself as a doctrinal preacher. By that, I mean that I explain a doctrine from the pulpit, I expect the Holy Ghost to begin stirring in peoples' hearts, and then I go wheresoever the Spirit of God leads me. I resolve to remain longsuffering because I have people who have sat in a blind stupor for many years only to awaken at some point to their peril or to their blindness.
I am putting a link to a message I preached at least 10 years ago, but which seems to illustrate the power of doctrine in preaching. At www.onesoulatatime.net you can hear many messages that may help you or someone that you love. The message is titled, The Law of the Spirit of Life in Christ Jesus. I attempt to use the law of Moses, the Gospels, and the Pauline Epistles to define that law and to make the hearer understand it.
This may help some of you who may wonder why I am stressing the study of Old Testament sacrifice.
May I highly recommend the tab on onesoulatatime.net that is labeled Leviticus. It is a series taught by Dale Morey of Liberty Behind Bars who was saved and trained here at Black Creek.