The following is from Spurgeon's message, Turn Or Burn!
"Perhaps some of the Puritan 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 we 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 that they shall be punished; and so long as the world will not give up its sin, we feel we must not cease our warnings. But the cry of the age is, that God is merciful, that God is love. Ay, who said he was not? But remember, it is equally true, God is just, severely and inflexibly just! He were not God, if he were not just; he could not be merciful if he were not just, for punishment of the wicked is demanded by the highest mercy to the rest of mankind. Rest assured, however, that he is just, and that the words I am about to read you from God's word are true: 'The wicked shall be turned into hell, and all the nations that forget God;' 'God is angry with the wicked every day;' 'if he turn not, he will whet his sword; he hath bent his bow, and made it ready. He hath also prepared for him the instruments of death; he ordaineth his arrows against the persecutors.' Forsooth, because this age is wicked, it is to have no hell; and because it is hypocritical it would have but feigned punishment. This doctrine is so prevalent as to make even the minsters of the gospel flinch from their duty in declaring the day of wrath. How few there are who will solemnly tell us of the judgment to come. They preach of God's love and mercy, as they ought to do, and as God has commanded them; but of what avail is it to preach mercy unless they preach also the doom of the wicked? And how shall we hope to effect the purpose of preaching unless we warn men that if they 'turn not, he will whet his sword?' I fear that in too many places the doctrine of future punishment is rejected, and laughed at as a fancy and a chimera; but the day will come when it shall be known to be a reality."
The judgment of God is to be preached solemnly and earnestly. People should tremble knowing the terrors of the Lord. One of the evidences that the world is morally corrupt and unrighteous is that "there is no fear of God before their eyes." If we knew that a bridge was out on a major interstate and that cars were rushing past headed for certain destruction; would we stand politely on the shoulder, saying, "Excuse me, Excuse me" in hushed tones. To do so would be a great dereliction of duty. For the love of humanity we would stand as much as we dare in the way of traffic, waving our arms and demanding that they stop and turn around lest they be destroyed. How can we do any less for the countless souls who rush past us every day on the way to eternal destruction?