The sinking of Numenor - a lesson to whom?

[Ibrîniðilpathânezel]

Again, taken in context with the biblical Yahweh, Eru comes off looking much less vengeful and spiteful...almost kindly, in a wrath of god, apocalyptic sense.

It does seem that the biggest mention of "wrath" is the War of Wrath, which was a label the Elves gave to the mobilization of the Valar against Morgoth -- which, if I'm recalling correctly, didn't really sit terribly well with Eru; He would have preferred them to move against Melkor much sooner, and trust Him to protect the Eruhini rather than remove the Elves to Aman for safekeeping -- a move which ultimately led to not only the destruction of Beleriand, but the creation and downfall of Numenor. In the Akallabeth, it says:

Then Manwe upon the Mountain called upon Iluvatar, and for that time the Valar laid down their government of Arda. But Iluvatar showed forth his power and he changed the fashion of the world; and a great chasm opened in the sea between Numenor and the Deathless Lands, and the waters flowed down into it, and the noise and smoke of the cataracts went up into heaven, and the world was shaken...

There is no mention of wrath or punishment; in fact, there is no mention of whose idea this cataclysm was. Was it the Valar's, or Eru's? The whole "Numenor Project" was not terribly well conceived; it seems very much that the Valar, in attempting to reward the Edain, made another version of the same mistake they made with the Elves, allowing them to come close to something they then forbad them have. If they had learned about jealousy from Melkor and Feanor, they would have realized that this problem would almost inevitably arise among the Numenoreans. Sauron didn't cause them to yearn for immortality; he simply goaded them into an act he felt certain would bring about their complete destruction. It could be that the Valar, in setting aside their governance, asked for some kind of "final solution," without realizing the full implications of what they asked.

I also wonder just who wrote the account of the Akallabeth, particularly in regards to events in Aman (if we carry forward Tolkien's "conceit" of presuming these are actual historical documents). One can presume that Elendil and the other refugees were aware of the great wave and the inundation of the land, but who told the writer about the doings of the Valar? I can't imagine anyone in Middle-earth knew those particular details (unless Ulmo or Osse told them to Cirdan); is the document one peculiar to Elven historians in Aman?

Enquiring minds still want to know....