Losing the thread: Without an outline, it is easy to get sidetracked and lose your line of reasoning.
Unnecessary repetition: There is a risk of repeating the same points several times because there is no clear record of what has already been covered, which can make the message tiring for listeners.
Lack of depth: Lack of adequate preparation, which an outline facilitates, can lead to a superficial exploration of the topic.
Difficulty engaging the audience: A disorganized sermon can make it difficult to connect with the audience.
Personal frustration: In addition to the impact on the congregation, the absence of an outline can lead to personal frustration and discouragement when realizing that the message was not conveyed as effectively as it could have been.