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Rest assured that the most fervid revivalism will wear itself out in mere smoke, if it be not maintained by the fuel of teaching.... Sound teaching is the best protection for the heresies which ravage right and left among us.

Spurgeon, Charles (2015). “Charles Spurgeon: Lectures to My Students, Volume 1”, p.74, Delmarva Publications, Inc.
Rest assured that the most fervid revivalism will wear itself out in mere smoke, if it be not maintained by the fuel of teaching.... Sound teaching is the best protection for the heresies which ravage right and left