[metmom]

Ezra T. Clark remembered: “I heard the Prophet Joseph say that he would give the Saints a key whereby they would never be led away or deceived, and that was: The Lord would never suffer a majority of this people to be led away or deceived by imposters, nor would He allow the records of this Church to fall into the hands of the enemy.”

But isn't that what Smith said did happen for most of Church history until he received his revelation?

If his revelation is the truth, why'd it take so long for God to correct it?

[Godzilla]

But isn't that what Smith said did happen for most of Church history until he received his revelation?

Not correct - that is what he said happened to ALL of the history of Christianity.