But the Corinthians were not limited to this text. They had St. Paul's general teaching in their minds to interpret it by; and if we wish to know what it meant even for them, we must fill out this vague idea with what the Apostle tells us elsewhere. Thus in the great text in Ephesians (i. 13 f.), so often referred to, he speaks of the Holy Spirit with which we were sealed as the earnest _of our inheritance_. God has an "inheritance" in store for us. His Spirit makes us sons; and if sons, then heirs; heirs of God, joint-heirs with Christ. This connexion of the Spirit, sonship, and inheritance, is constant in St. Paul; it is one of his most characteristic combinations. What then _is_ the inheritance of which the Spirit is the earnest? That no one can tell. "Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things that God hath prepared for them that love Him." But though we cannot tell more precisely, we can say that if the Spirit is the earnest of it, it must be in some sense a development of the Spirit; life in an order of being which matches the Spirit, and for which the Spirit qualifies. If we say it is "glory," then we must remember that only Christ in us (the seal of the Spirit) can be _the hope_ of glory. The application of this can be made very plain. Our whole life in this world looks to some future, however near or bounded it may be; and every power we perfect, every capacity we acquire, every disposition and spirit we foster, is an earnest of something in that future. Here is a man who gives himself to the mastery of a trade. He acquires all its skill, all its methods, all its resources. There is nothing any tradesman can do that he cannot do as well or better. What is that the earnest of? What does it ensure, and as it were put into his hand by anticipation? It is the earnest of constant employment, of good wages, of respect from fellow-workmen, perhaps of wealth. Here, again, is a man with the scientific spirit. He is keenly inquisitive about the facts and laws of the world in which we live. Everything is interesting to him--astronomy, physics, chemistry, biology, history. What is this the earnest of? It is the earnest, probably, of scientific achievements of some kind, of intellectual toils and intellectual victories. This man will enter into the inheritance of science; he will walk through the kingdoms of knowledge in the length of them and the breadth of them, and will claim them as his own. And so it is wherever we choose to take our illustrations. Every spirit that dwells in us, and is cultivated and cherished by us, is an _earnest_, because it fits and furnishes us for some particular thing. _God's_ Spirit also is an earnest of an inheritance which is incorruptible, undefiled, imperishable: can we assure ourselves that we have anything in our souls which promises, because it matches with, an inheritance like this? When we come to die, this will be a serious question.