"Two hundred years ago the predominant strain of the pulpit was one of terror: it was like Mount Sinai, it thundered forth the dreadful wrath of God, and from the lips of a Baxter or a Bunyan, you heard most terrible sermons, full to the brim with warnings of judgment to come. Perhaps some of the Puritanic fathers may have gone too far, and have given too great a prominence to the terrors of the Lord in their ministry: but the age in which we live has sought to forget those terrors altogether, and if we dare to tell men that God will punish them for their sins, it is charged upon us that want to bully them into religion, and if we faithfully and honestly tell our hearers that sin must bring after it certain destruction, it is said that we are attempting to frighten them into goodness. Now we care not what men mockingly impute to us; we feel it our duty, when men sin, to tell them they shall be punished, and so long as the world will not give up its sin we feel we must not cease our warnings."
- From Spurgeon's Sermon Turn or Burn! (Listen to entire sermon, Turn or Burn)
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray