John Gill, on Neh 13:21

“And I charged them, and I said to them: Why stay you before the wall? if you do so another time, I will lay hands on you. And from that time they came no more on the sabbath.”

“And their children spoke half in the speech of Ashdod,.... Which they learned of their mothers, so that it was a mixed language they spoke, partly Jewish and partly Philistine; but some refer this not to their speech, but to the number of their children; that half of them, which Jarchi interprets many of them, spoke in the language of Ashdod, even as many as were most with their mothers, and chiefly brought up by them: and could not speak in the Jews' language; not at all, or so much as to be understood well, which inclines to the last sense: but according to the language of each people; their mothers were of, whether of Ashdod, or of Ammon, or of Moab.”

Imported from an open dataset — not yet checked against the printed edition.