Preach it practically, and in a simple form, so that "the wayfaring man, though he be a fool may not err therein."
Preach it for men, not angels.
Put it down where all can understand and get it, but where none can trample it.
A camp president said to a camp evangelist, "Your manners and language are so simple, but you had not spoken long until I saw that you had a trained mind."
Great preachers express great truths in simple words, but little preachers express little thoughts in big words.
Never brag on your own knowledge, wisdom, experience, etc.