Final answer:
The question does not have a clear answer based on the provided information.
Step-by-step explanation:
The question is asking about someone who was saved at the age of 18 instead of 8 due to a revivalist's lack of care. Unfortunately, none of the provided information directly mentions a specific person who fits this description. There is information about religious revivalism in the late 1970s and early 1980s, the Great Awakening in the early eighteenth-century, and the Second Great Awakening in the 1790s. However, none of these provide a clear answer to the question.