Much as I appreciate this in-depth rebuttal, the facts speak for themselves.
Anyone with even a modicum of knowledge of literature can recognize works by two different authors by their writing styles - their vocabulary and word choice, their use of imagery and figurative language, etc... An allegedly eternal and unchanging God would be consistent in his dictation style, and "secretaries" copying His words would subsequently be consistent in their writing styles.
They are not consistent.
Furthermore, in the Gospels, we now have four accounts of the same incidents - now, while it would be plausible for the same source to have these "secretaries" emphasize different events for different reasons, they would at the very least get their facts straight. And these are not trivial facts - although if God is in fact speaking, nothing is "trivial" - these are crucial facts about crucial people and events.
They do not get these facts straight.
"Nonsense," indeed.