The thing is, even if God specifically condemns killing people to get them to heaven, it's certainly not an unforgivable sin. And Jesus says a sin is a sin, so killing babies like that isn't any worse than having dirty thoughts about a woman that's not your wife. Just say you're sorry, and the Big Man will look past it.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell