Perhaps the most pernicious misinterpretation of the nature of this union is that which conceives of it as a physical and material one, and which rears upon this basis the fabric of a sacramental and external Christianity. It is sufficient here to say that this union cannot be mediated by sacraments, since sacraments presuppose it as already existing; both Baptism and the Lord’s Supper are designed only for believers. Only faith receives and retains Christ; and faith is the act of the soul grasping what is purely invisible and supersensible: not the act of the body, submitting to Baptism or partaking of the Supper. William Lincoln: “The only way for the believer, if he wants to go rightly, is to remember that truth is always two‐sided. If there is any truth that the Holy Spirit has specially pressed upon your heart, if you do not want to push it to the extreme, ask what is the counter‐truth, and lean a little of your weight upon that; otherwise, if you bear so very much on one side of the truth, there is a danger of pushing it into a heresy. Heresy means selected truth; it does not mean error; heresy and error are very different things. Heresy is truth, but truth pushed into undue importance, to the disparagement of the truth upon the other side.” Heresy (αἵρεσις) = an act of choice, the picking and choosing of a part, instead of comprehensively embracing the whole of truth. Sacramentarians substitute the symbol for the thing symbolized. B. Positively.—It is: (_a_) An organic union,—in which we become members of Christ and partakers of his humanity. Kant defines an organism, as that whose parts are reciprocally means and end. The body is an organism; since the limbs exist for the heart, and the heart for the limbs. So each member of Christ’s body lives for him who is the head; and Christ the head equally lives for his members: _Eph. 5:29, 30_—“_no man ever hated his own flesh; but nourisheth and cherisheth it, __ even as Christ also the church; because we are members of his body_.” The train‐ despatcher is a symbol of the concentration of energy; the switchmen and conductors who receive his orders are symbols of the localization of force; but it is all one organic system. (_b_) A vital union,—in which Christ’s life becomes the dominating principle within us.