Komentarz do Izajasza 6:2

Seraphim stood above in heaven.

for Him i.e., to serve him, and so does Jonathan render: Holy servants are on high before Him.

with two he would cover his face so as not to look toward the Shechinah.

and with two he would cover his feet for modesty, so as not to bare his entire body before his Creator. And in Tanhuma (Emor 8), I saw that the feet were covered because they are like the sole of the foot of a calf, in order not to remind Israel of the sin of the golden calf.

and with two he would fly And with two he would serve [from Targum Jonathan].