וַיְהִ֕י כִּֽי־יָֽרְא֥וּ הַֽמְיַלְּדֹ֖ת אֶת־הָאֱלֹהִ֑ים וַיַּ֥עַשׂ לָהֶ֖ם בָּתִּֽים׃
산파는 하나님을 경외하였으므로 하나님이 그들의 집을 왕성케 하신지라
Chizkuni
ורוח אלקים, this wind was needed as a feature on physical earth, at the time when G-d commanded the waters to recede so that dry land would become visible. (Genesis 1,9). Compare also Exodus 1,21 when Moses credits the east wind with having made possible the splitting of the sea of reeds, enabling the people of Israel to cross on dry ground.
Or HaChaim
We encounter the expression אמירה as one which describes appointing someone to a high position in Deut. 26, 17-18 where Israel and G'd each elevate the other to an exclusively superior status. Israel had appointed G'd as its only G'd, and in return G'd appointed Israel as His chosen people. Perhaps the fact that the midwives risked the displeasure of Pharaoh as well as being demoted or worse is reflected in the reward G'd gave them as reported by the Torah in verse 21.
Tze'enah Ure'enah
Bahya writes. “He established households for them” [1:21], means that Pharaoh placed an Egyptian between two Israelite houses, to watch over the Israelites so that if a woman would have a son, it should be thrown into the water.37Bahya, Exodus, 1:21.