קבלה אויף קהלת 10:20

Vav [of the Name Havayah] - this is the Torah that dwells in the mouth, and in the breath of the mouth it fledges on the eagle, since the eagle is the nose, the two wings are the two lips, and about it it is written: "a bird of the air carries the utterance, and a winged creature reports the word" (Prov. 10:20). And this is the middle pillar,

All winged creatures, who receive the sound from the world, suspend from these ears. They are all called the ears of Hashem, as said, “for a bird of the sky shall carry the sound” (Kohelet 10:20). He asks, the verse “for a bird of the sky shall carry the sound” is difficult to understand. What sound is that here, seeing that the verse begins with, “Do not curse the king, no, not even in your thought” (Ibid.). If it is written “in your thought…… even in your bedchamber,” why then “a bird of the sky shall carry the sound”? There is no sound here, just a thought.