Oldbear83 said:
" There are many Calvinists that believe infants who die will go to hell"
I have not heard that in my life. I do not think your statement is true.
Provide links of those people saying that, please.
The "elect infants" language in the Westminster Confession is itself an implicit admission that non-elect infants exist as a category within their framework. You can't really escape it if you're claiming TULIP is dogmatic.
If Calvinists say "elect infants dying in infancy are saved," they've created a logical category of non elect infants dying in infancy. And if unconditional reprobation means what they say it means, that category of infants faces damnation. They can't have it both ways.
Peter Martyr Vermigli "Young infants must be punished (in hell-fire). But it is credible they shall be the easier punished."
Calvin himself, per Krauth's documented citations from his Opera: "As to infants they seem to perish not by their own fault but by the fault of another…they bear corruption shut up in the soul, so that before God they are damnable."
Lutheran theologian Charles Krauth summarized the position plainly: "Holding that all infants deserve damnation, that the election of God alone can save them from it, and that this election does not extend to all infants, Calvinism of necessity teaches that some infants perish."