Final answer:
Jonathan Edwards used vivid imagery of hell in his sermons to instill the fear of burning forever in a fiery pit to motivate his audience toward religious reform.
Step-by-step explanation:
In his sermon, Jonathan Edwards mainly taps into his audience's fear of burning forever in a fiery pit. Edwards is known for his vivid depictions of hell and the eternal punishment that awaits sinners, intending to invoke a fear-based motivation toward salvation and religious reform. His most famous sermon, Sinners in the Hands of an Angry God, emphasizes the perilous state of those not aligned with the Christian faith, using graphic imagery and the concept of divine wrath to impact his audience deeply.