*Minor differences ignored. Grouped by changes, with first version listed as example.
Unto this day - This last clause was probably added by a later hand.
And Joshua burnt Ai, and made it an heap for (l) ever, [even] a desolation unto this day.
(l) That it could never be built again.
And Joshua burnt Ai,.... The whole city, fire being only set before to a few houses, to make a smoke as a signal; he did with it as he had done with Jericho, for so he was ordered, Joshua 8:2,
and made it an heap for ever; that is, for a long time, for it appears to have been rebuilt, and to have been inhabited by the Jews, after their return from their Babylonish captivity, Nehemiah 11:31,
even a desolation unto this day; to the time of the writing of this book; and by what has been just observed, it appears that Ezra could not be the writer of it, since this city was inhabited in his time.
Joshua burnt Ai, and made it an heap for ever--"For ever" often signifies "a long time" (Genesis 6:3). One of the remarkable things with regard to the tell we have identified with Ai is its name--the tell of the heap of stones--a name which to this day remains [VAN DE VELDE].
Joshua had the town burnt down and made into a heap of rubbish for ever.
*More commentary available at chapter level.