From the early Church Fathers to now.
“And it was told Holofernes the general of the army of the Assyrians, that the children of Israel prepared themselves to resist, and had shut up the ways of the mountains.”
“Mountains. Greek adds, “and had fortified every summit of a high mountain, and had placed scandals in the plains,” obstructing the passage (Haydock) with ditches, trees, (Calmet) and snares of every description. (Haydock)”
The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.