Below you will find a youtube video of Wayne Grudem (Professor at Phoenix Seminary) giving a lecture on the importance of theology (i.e. doctrine). Why is theology important? His answer is stunningly simple: Lest we be destroyed for lack of knowledge.
Prairie Flower, why do I preach and teach on doctrine for 13 weeks this summer? Answer: Lest you be destroyed…carried about with every wind of doctrine…and sink in your sins and think you’ve found ultimate joy. This is why theology matters. This is why I will always teach you good, strong, biblical theology. Check out the video below: