…Baptists have been the only adequate interpreters of the Reformation.
The denominations generally, except Baptists, have been much perplexed over the salvation of infants dying in infancy, until recent years. Our Confession of 1660 contains a distinct article declaring that all infants dying in infancy are saved. I quote Article 10, p. 112:
‘That all children dying in infancy, having not actually transgressed against the law of God in their own persons, are only subject to the first death, which comes upon them by the first Adam, from whence they shall be all raised by the second Adam, and not that any one of them (dying in that estate) shall suffer for Adam’s sin eternal punishment in hell (which is the second death), for of such is the kingdom of heaven, 1 Cor. 15:22; Matt. 19:14; not daring to conclude with that uncharitable opinion of others, who though they pleaded much for the bringing of children into the visible church here on earth by baptism, yet nevertheless, by their doctrine that Christ died but for some, shut a great part of them out of the kingdom of heaven forever.’
More on this point is contained in Article 44, Confession of 1678, p. 163.
–E. Y. Mullins, The Axioms of Religion: A New Interpretation of the Baptist Faith, 1908. pp. 258-261