Rashi: One who thinks that he will guard her from her Zenus - just like one cannot shut in wind, one cannot shut her in.

Malbim: Ru'ach Tzafon (wind hidden) in vapors, when it leaves, it begets rain. When it is hidden in the vapors, there is no rain. If one wants to be Tzofen (constrain) the Ru'ach of this woman to stop the rain, the Ru'ach storms to leave.

Rashi: He calls Tzara'as to come on himself, until he will divorce her, like a Metzora becomes Tahor via oil placed on his right thumb.

Malbim: The oil found on his right hand, which she bruised with blows (it is normal to soften them with oil - "Lo Chubashu v'Lo Rukekah ba'Shamen" - Yeshayah 1:6) calls, publicizes and denounces the Matzpon ¹ .