From the early Church Fathers to now.
“And there remained of all the number of Benjamin only six hundred men that were able to escape, and flee to the wilderness: and they abode in the rock Remmon four months.”
“At Gibeah also, now a complete ruin, she stopped for a little while remembering its sin, and the cutting of the concubine into pieces, and how in spite of all this three hundred men of the tribe of Benjamin were saved that in after days Paul might be called a Benjamite.”
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.