Sforno on Deuteronomy 32:19/ספורנו על דברים ל״ב:י״ט

1וינאץ מכעס בניו ובנותיו, after He had failed to make you attain your perfection while on your own land, He chose a third route, namely to refine your character while you were in exile; by doing this He appeared to despise His sons and His daughters, and did not display mercy on their children nor respect the dignity of their daughters.