Boanerges,

Is the Large Catechism of the Book of Concord authoritative enough for you? Would you consider Luther to be an authoritative Lutheran dogmatician?

Quote
Large Catechism, Of Infant Baptism
Thus we do also in infant baptism. We bring the child in the conviction and hope that it believes, and we pray that God may grant it faith; but we do not baptize it upon that, but solely upon the command of God. Why so? Because we know that God does not lie. I and my neighbor and, in short, all men, may err and deceive, but the Word of God cannot err.