Sforno on Deuteronomy 32:39/ספורנו על דברים ל״ב:ל״ט

1ראו עתה כי אני אני הוא, realise now that it had been I Who had brought disaster in exile upon you!

2ואין אלוהים עמדי, I had not required the assistance of any other deity. Your misfortune was not due to any celestial forces appointed by Me.

3אני אמית ואחיה, only I decree death and resurrection.(compare Ezekiel 37,12)

4מחצתי, I have smashed, by decreeing your unsettled condition, forcing you to move from one country to another without taking permanent root in any of them. (compare Kings I 14,15) where the prophet compares the existence of the Jewish people after G’d has chastised them as similar to that of a reed which is constantly moving.

5ואני ארפא, and only I can bring healing, as described in Isaiah 30,26.