Inward, penetrating, by contact; but mainly the great peculiarity of Christian ethics is that the inner life is dealt with first, the will and the heart, and afterwards the outward conduct. II. The part which we have to take in this cleansing process. 'Have salt' is a command; and this implies that while all the cleansing energy comes from God, the working of it on our souls depends on ourselves. (a) Its original reception depends on our faith. The 'salt' is here, but our contact with it is established by our acceptance of it. There is no magical cleansing; but it must be received within if we would share in its operation. (b) Its continuous energy is not secured without our effort. Let us just recall the principle already referred to, that the 'salt' implies the whole cleansing divine energies, and ask what are these? The Bible variously speaks of men as being cleansed by the 'blood of Christ,' by the 'truth,' by the 'Spirit.' Now, it is not difficult to bring all these into one focus, viz., that the Spirit of God cleanses us by bringing the truth concerning Christ to bear on our understandings and hearts. We are sanctified in proportion as we are coming under the influence of Christian truth, which, believed by our understandings and our hearts, supplies motives to our wills which lead us to holiness by copying the example of Christ. Hence the main principle is that the cleansing energy operates on us in proportion as we are influenced by the truths of the Gospel. Again, it works in proportion as we seek for, and submit to, the guidance of God's Holy Spirit. In proportion as we are living in communion with Christ. In proportion as we seek to deny ourselves and put away those evil things which 'quench the Spirit.' This great grace, then, is not ours without our own effort. No original endowment is enough to keep us right. There must be the daily contact with, and constant renewing of the Holy Ghost. Hence arises a solemn appeal to all Christians. Note the independence of the Christian character. 'In yourselves.' 'The water that I shall give him shall be in him a fountain,' etc. Not, therefore, derived from the world, nor at second-hand from other men, but you have access to it for yourselves. See that you use the gift. 'Hold fast that which thou hast,' for there are enemies to withstand--carelessness, slothfulness, and self-confidence, etc. III. The relation to one another of those who possess this energy. In proportion as Christians have salt in themselves, they will be at peace with one another. Remember that all sin is selfishness; therefore if we are cleansed from it, that which leads to war, alienation, and coldness will be removed. Even in this world there will be an anticipatory picture of the perfect peace which will abound when all are holy. Even now this great hope should make our mutual Christian relations very sweet and helpful.