When you preach a series, how do you determine what you will take for a topic? I prefer to go through a book verse by verse yet, I feel there is a need for some topical preaching that may address needs that must be addressed. However, how would one determine what those needs are? I find that my ability to read the church isn't infallible. Sometimes what I think is needed isn't so very necessary, if you know what I mean? I'd like input on this as covers the whole spectrum of even determining what book you shall expound upon next. How's that for a broad topic?