The main benefit obtained by preaching is by an impression made upon the mind at the time, and not by an effect that arises afterwards by a remembrance of what was delivered. And though an after-remembrance of what was heard in a sermon is oftentimes very profitable; yet, for the most part, that remembrance is from an impression the words made on the heart at the time; and the memory profits, as it renews and increases that impression. (Thoughts on the Revival, Part III, emphasis added)
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