If any of you try to content yourselves with this world, any hope to find a heaven in the midst of your business and your family without looking upward for it, you labor in vain. If you hope to find pleasure in sin, and think that it will go well with you if you despise the law of God, you will make a great mistake. You might as well seek for roses in the grottoes of the sea, or look for pearls on the pavements of the city. You will find what your soul requires nowhere but in God. To seek after happiness in evil deeds is to plough a rock of granite. To labor after true prosperity by dishonest means is as useless as to till the sandy shore. "Wherefore do you spend your money for that which is not bread, and your labor for that which satisfieth not?" Young man, you are killing yourself with ambition; you seek your own honor and emolument, and this is a poor, poor object for an immortal soul. And you, too, sir, are wearing out your life with care; your mind and body both fail you in endeavoring to amass riches, as if a man's life consisted in the abundance of the things which he possesses; you are ploughing a rock; your cares will not bring you joy of heart or content of spirit; your toil will end in failure. And you, too, who labor to weave a righteousness by your works apart from Christ and fancy that with the diligent use of outward ceremonies you may be able to do the work of the Holy Spirit upon your own heart, you, too, are ploughing thankless rock. The strength of fallen nature exerted at its utmost can never save a soul. Why, then, plough the rock any longer? Give over the foolish task. So far, I believe, we have not misread the text, but have mentioned a very probable meaning of the words; still another strikes me, which I think equally suitable, and upon it I shall dwell, by God's help. It is this. _God will not always send his ministers to call men to repentance._ When men's hearts remain obdurate, and they do not and will not repent, then God will not always deal with them in mercy. "My Spirit shall not always strive with man." There is a time of ploughing, but when it is evident that the heart is wilfully hardened, then wisdom itself suggests to mercy that she should give over her efforts. "Shall horses run upon the rock? will one plough there with oxen?" No, there is a limit to the efforts of kindness, and in fulness of time the labor ceases, and the rock remains unploughed henceforth and for ever. I. Taking that sense, we shall speak upon it, and remark, first, that MINISTERS LABOR TO BREAK UP MEN'S HEARTS; the wise preacher tries by the power of the Holy Ghost to break up the hard clods of the heart, so that it may receive the heavenly seed.