As promised...

[DHBirr]

Re: the comment in the Concordance about the line that where Keiichi is, is heaven -- before Heinlein wrote something similar in Job, Mark Twain wrote something much the same in 1905 as the last line of a humorous short book titled Eve's Diary (interspersed with extracts from Adam's Diary).

AT EVE'S GRAVE

ADAM: Wheresoever she was, THERE was Eden.

I've a strong suspicion that Heinlein was deliberately paraphrasing Twain, though it might've been coincidence as with yours. Incidentally, Poul Anderson used yet another version at the climax of The High Crusade, when Catherine tells Roger it doesn't matter that they've lost the records that could navigate them back to England.
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Big Brother is watching you.  And damn, you are so bloody BORING.