Preaching as an important part of the Ministry of the Word. Preaching does not imply that we have all the answers, indeed we may not know all the questions. The purpose of preaching is to be a bridge between the known and the unknown, between the temporal and the eternal, between the sacred tradition and life as it confronts us today.
Most normally the preaching will relate to the scripture readings, something happening in the service, or something happening in our world, and very often it will be trying to see how these things work together.
If you don’t fully understand something you hear, you should take up up with the preacher, and discuss the matter further, and that way we can all grow together.