Be sure, also, to yield to this subject _your most earnest love_. The best field in the little estate of manhood is not the head, but the heart; sow the principal wheat there. Oh, to have true religion in the heart; to love what we know--intensely to love it; to hold it fast as with the grip of life and death--never to let it go! The Lord says, "My son, give me thy heart," and he will not be contented with anything less than our heart. Oh, when your zeal is most burning, and your love is most fervent, let the warmth and the fervency all go towards the Lord your God, and to the service of him who has redeemed you with his precious blood. Let the principal wheat have the principal part of your nature. Towards God and his Christ also turn your _most fervent desires_. When you enlarge your desire, desire Christ; when you become ambitious let your ambition be all for God. Let your hunger and your thirst be after righteousness. Let your aspirations and your longings be all towards holiness, and the things that shall make you like to Christ. Give to this principal wheat your principal desires. Then let the Lord have _the attentive respect of your life_. Let the principal wheat be sown in every action. If we are truly Christians we must be as much Christians outside the church as in it. We shall try to make our eating and our drinking, and everything we do, tend to the glory of God. Draw no line between the secular and the religious part of your conduct, but let the secular be made religious by a devout desire to glorify God in the one as much as in the other. Let us worship God in the commonest duties of life, even as they do who stand before his throne. So it ought to be. Let us sow the principal wheat in all the fields of our conversation, in business, in the family, among our friends, and with our children. May we each one feel, "For me to live is Christ. I cannot live without Christ, or for anything but Christ." Let your whole nature yield itself to Jesus, and to none else. We should give to this principal wheat _our most earnest labors_. We should spend ourselves for the spread of the gospel. A Christian man ought to lay himself out to serve Jesus. I hate to see a professing man zealous in politics and lukewarm in devotion; all on fire at a parish vestry, and chill as winter when he comes to a prayer-meeting. Some fly like eagles when they are serving the world, but they have a broken wing in the service of God. This should not be. If anything could rouse us up, and make the lion within us roar in his strength, it should be when we confront the foes of Jesus or fight in his cause. Our Lord's service is the principal wheat, let us labor most in connection with it.