"Prayer is appointed to convey The blessings God designs to give."
So with sacraments; they convey gifts from God, not primarily gifts from us to God.
He, then, who declines to have his children baptized, on the ground that it is useless, may, in so doing, interrupt the communication of a divinely-appointed medium between God and his child. For he need not be told that the faith of parents brought blessings from the Saviour, when on earth, to their children, nor be reminded that the benefits of circumcision were bestowed on the ground of the parental relation to God.
One further illustration occurs to me of the power which resides in the sacraments themselves, in distinction from their being a testimony from us to God. Let me call to your remembrance notices which you sometimes see, of young people going, in a frolic, before a clergyman or justice of the peace, to be married, when they intended nothing but sport, and found, afterward, that they had brought themselves into difficulty, and were legally held to be married.
You see by this that covenants do not, by any means, derive all their efficacy from the feelings of a contracting party. Covenants and their seals are the most sacred of all human transactions, and cannot be lightly regarded, or trifled with. God reveals himself often under the name of the God that keepeth covenant. So that we may not set aside the sacraments, nor undervalue them. This leads me to say, furthermore, that children, who doubt whether their parents sincerely and truly offered them to God in baptism, the parents being in an unregenerate state, as it afterward appeared, when they came with their children to the ordinance, may be greatly comforted and encouraged by taking this view of the divine sacrament of baptism as having a force and application in their behalf, by the goodness of God, irrespective of their parents' character. God will not let his sacraments depend, for their efficacy, on the character either of the administrator or of the parents. For, if the character of an administrator affected the baptism, it might so happen that one could never really be baptized, since every successive hand which applied it might prove, in turn, to be that of an unworthy person. If a child is baptized on the profession of parents who afterward show that they were not sincere, the child shall not suffer thereby, if he recognizes the transaction, and makes it his own act. In the case of a converted husband or wife, while one companion remained a heathen, the children were, nevertheless, counted "holy," because the Gospel leaned to the side of mercy, and gave the children the benefit of the believing parent's faith, instead of attainting them through the heathen parent. So, when a child is baptized in error, he shall not suffer, nor even lose anything, if he will accept the covenant with its seal. No one can justly reply to all this, that, therefore, every one even though not of the church, may offer his child for baptism. No; for these are exceptional cases, in which it is true that a covenant, even if it be not fulfilled, has force, and things may enure under it which one who does not make the required profession cannot receive. The covenant, if but the outward conditions be complied with, places all, who are in any way related to it, under various contingencies, which sometimes, to some of the parties, may be productive of good. We see illustrations of this in the great tenderness and love which we feel toward a child whose parent has brought a stain upon himself and his family. We find an echo, in our hearts, of those kind words of the Most High, "The son shall not bear the iniquity of the father;" and, if that son behaves himself worthily, every good man is doubly careful to protect and help him. In this way the broken, or unfulfilled, covenant operates, with God and with man, to the good of some related to it. But shall we, therefore, break our covenant? Shall the unworthy be promiscuously admitted to its privileges? "Shall we continue in sin that grace may abound?"