... For the bird of the skies will lead/bring the voice, and the masters of wings will tell a word” [Ec 10:20]. Here this [word] is YHVH, the central pillar...
... Y’ י is the head of the bird. V’ ו is his body. H”H ה ה are the two wings, through which he flies upward and comes to rest below. And these two wings are two breaths, H”H, and concerning them it is said, “And the animals/chayot [bearing the divine chariot] ran and returned” [Ez 1:14], for these are Y”V: a breath leaves through Y’ י – a breath returns through V’