That is not easy. Whatever may be the objections to be brought against this summary of Christian duty, the objection that it is vague is the last that can be sustained. Try it, and you will find out that it is anything but vague. It will grip tight enough, depend upon it. It will go deep enough down into all the complexities of our varying circumstances. If it has a fault (which it has not) it is in the direction of too great stringency for unaided human nature. But the stringency is not too great when we depend upon Him to help us, and an impossible ideal is a certain prophet of its own fulfilment some day. So, brethren, here is the sufficient guide, not because it cumbers us with a mass of wretched little prescriptions such as a martinet might give, about all sorts of details of conduct. That is left to profitless casuists like the ancient rabbis. But the broad principles will effloresce into all manner of perfectnesses and all fruits. He that has in his heart these thoughts, that the definition of virtue is pleasing Jesus Christ, that the concrete form of goodness is likeness to Him, and that the elements of likeness to Him are these two, that I should never think about myself, and always think about God, needs no other guide or instructor to fill his life with 'whatsoever things are lovely and of good report,' and to make his own all that the world calls virtue, and all which the consciences of good men have conspired to praise. But not only does this guide prove its sufficiency by reason of its comprehensiveness, but also because there is no difficulty in ascertaining what at each moment it prescribes. Of course, I know that such a precept as this cannot contain in itself guidance in matters of mere practical expediency. But, apart from these--which are to be determined by the ordinary exercise of prudence and common sense--in regard to the right and the wrong of our actions, I believe that if a man wants to know Christ's will, and takes the way of knowing it which Christ has appointed, he shall not be left in darkness, but shall have the light of life.