For he maketh small the drops of water; rather, he drawth up the drops of water; i.e. by the heat of his sun he causes exhalations to arise from the sea and the moist earth, and draws them up into the higher regions of the atmosphere, where they are condensed into clouds, that hang suspended in the air.
They pour down rain according to the vapour thereof; literally, they flow down as rain for his mist. The water collected in the clouds flows down in the shape of rain for the purpose of watering the earth (see Genesis 2:6, where the same word ( אד) occurs).