The purpose of preaching, then, is to effect changes among the members of God’s church that build them up individually and that build up the body as a whole. Individually, good pastoral preaching helps each person in the congregation to grow in his faith, conforming his life more and more to biblical standards. Corporately, such preaching builds up the church as a body in the relationship of the parts to the whole, and the whole to God and to the world.
Jay Adams