In Anne of Green Gables What "Job's comforting" did Rachel offer to Marilla?

Rachel's "comforting" was a list of warnings.

From the text:

“Well, Marilla, I’ll just tell you plain that I think you’re doing a mighty foolish thing—a risky thing, that’s what. You don’t know what you’re getting. You’re bringing a strange child into your house and home and you don’t know a single thing about him nor what his disposition is like nor what sort of parents he had nor how he’s likely to turn out. Why, it was only last week I read in the paper how a man and his wife up west of the Island took a boy out of an orphan asylum and he set fire to the house at night—set it on purpose, Marilla—and nearly burnt them to a crisp in their beds. And I know another case where an adopted boy used to suck the eggs—they couldn’t break him of it. If you had asked my advice in the matter—which you didn’t do, Marilla—I’d have said for mercy’s sake not to think of such a thing, that’s what.”

This Job’s comforting seemed neither to offend nor to alarm Marilla. She knitted steadily on.