This is taken from one of Spurgeon’s sermons
Spurgeon said: Let me give you a parable.
In the days of Nero there was great shortness of food in the city of Rome, although there was abundance of corn to be purchased at Alexandria. A certain man who owned a vessel went down to the sea coast, and there he noticed many hungry people straining their eyes toward the sea, watching for the vessels that were to come from Egypt with corn. When these vessels came to the shore, one by one, the poor people wrung their hands in bitter disappointment, for on board the galleys there was nothing but sand which the tyrant emperor had compelled them to bring for use in the arena. It was infamous cruelty, when men were dying of hunger to command trading vessels to go to and fro, and bring nothing else but sand for gladiatorial shows, when wheat was so greatly needed. Then the merchant whose vessel was moored by the quay said to his shipmaster, “Take thou good heed that thou bring nothing back with thee from Alexandria but corn; and whereas, aforetime thou hast brought in the vessel a measure or two of sand, bring thou not so much as would lie upon a penny this time. Bring thou nothing else, I say, but wheat: for these people are dying, and now we must keep our vessels for this one business of bringing food for them.”
Alas! I have seen certain mighty galleys of late loaded with nothing but mere sand of philosophy and speculation, and I have said within myself, “Nay, but I will bear nothing in my ship but the revealed truth of God, the bread of life so greatly needed by the people.” God grant us this day that our ship may have nothing on board it that may merely gratify the curiosity, or please the taste; but that there may be necessary truths for the salvation of souls. I would have each one of you say: “Well, it was just the old, old story of Jesus and his love, and nothing else.” I have no desire to be famous for anything but preaching of the gospel. There are plenty who can fiddle to you the new music; it is for me to have no music at any time but that which is heard in heaven,—
“Unto him that loved us, and washed us from our sins in his own blood, to him be glory for ever and ever!”