כִּ֭י יְגָרַ֣ע נִטְפֵי־מָ֑יִם יָזֹ֖קּוּ מָטָ֣ר לְאֵדֽוֹ׃
Pois atrai a si as gotas de água, e do seu vapor as destila em chuva,
Rashi
and increase speech Heb. ותגרע, like (below 36:27) “He will increase (יגרע) the drops of water,” and like (ibid. 15:8), “and [did] you increase (ותגרע) wisdom to yourself.”
Rabbeinu Bahya
ואד יעלה מן הארץ, “and a mist would rise from the earth.” The plain meaning is that these words refer to the steam which rises from the moisture of the various concentrations of water on earth. As they usually contain some solid particles from earth, the Torah called it אד “mist.” Seeing that the rain results from this moist mist and the clouds accept it, the cloud itself was called אד as we find in Job 36,27 יזוקו מטר לאדו, “which cluster into rain, from His mist.”