Moshav Zekenim (to 45:5): It corresponds to three matters of Leshon ha'Ra that Yosef said about them (Rashi to 37:2); Yosef was sold three times (to Yishmaelim, Socharim, Midyanim ¹ ); they bowed to him three times (42:6, 43:26,28), and he put them in jail for three days (42:17).

Ha'amek Davar: The name of the Ivrim will be great in the land, for the latter all remained alive via Yaakov's seed. The nations will understand that even though Yisrael are the smallest of the nations, they sustain the world. Yisrael among the nations are like the seed in fruit of a tree.

Malbim: You are 70 souls, and you have great flocks. You need a great salvation from the affliction of the future hunger!