I don't think you should be posting the answer to the current question unobfuscated, especially when there's no way for curious readers to get any other question after having that one spoiled (other than waiting for, at the moment, 7 hours or so).
It's not quite true that "it genuinely could have been from any OT book". First, when you make a guess it doesn't just tell you whether you got the book right, it also tells you whether you got the right section (major prophets, gospels, etc.). So if you guess that something's from Isaiah, after that you will at least know whether it's from Ezekiel or not.
I agree that this one could be from almost-but-not-quite anywhere in the OT, but bear in mind that the target audience (1) may well have read the whole thing multiple times and (2) may well have a good idea of the "tone" of various different books.
(I've been a godless heathen for many years, though I was a Christian for many years before that. In the present case my first guess was the same as yours but I didn't try your second guess, not only because of the can't-be-in-that-section thing but because I have a pretty good idea what sort of thing is in that book and I don't think there's much there that reads like this verse. It did, none the less, take me quite a lot of guesses. If I were still in the habit of reading the Bible a lot I expect I'd have done better. Which is kinda the point.)
It's not quite true that "it genuinely could have been from any OT book". First, when you make a guess it doesn't just tell you whether you got the book right, it also tells you whether you got the right section (major prophets, gospels, etc.). So if you guess that something's from Isaiah, after that you will at least know whether it's from Ezekiel or not.
I agree that this one could be from almost-but-not-quite anywhere in the OT, but bear in mind that the target audience (1) may well have read the whole thing multiple times and (2) may well have a good idea of the "tone" of various different books.
(I've been a godless heathen for many years, though I was a Christian for many years before that. In the present case my first guess was the same as yours but I didn't try your second guess, not only because of the can't-be-in-that-section thing but because I have a pretty good idea what sort of thing is in that book and I don't think there's much there that reads like this verse. It did, none the less, take me quite a lot of guesses. If I were still in the habit of reading the Bible a lot I expect I'd have done better. Which is kinda the point.)