Isaiah 6:2

Above it stood the seraphim - שרפים seraphim , from שרף seraph , to burn. He saw says Kimchi, the angels as flames of fire, that the depravity of that generation might be exhibited, which was worthy of being totally burnt up.

He covered his feet "He covereth his feet" - By the feet the Hebrews mean all the lower parts of the body. But the people of the East generally wearing long robes, reaching to the ground, and covering the lower parts of the body down to the feet, it may hence have been thought want of respect and decency to appear in public and on solemn occasions with even the feet themselves uncovered. Kempfer, speaking of the king of Persia giving audience, says, Rex in medio supremi atrii cruribus more patrio inflexis sedebat: corpus tunica investiebat flava, ad suras cum staret protensa; discumbentis vero pedes discalceatos pro urbanitate patria operiens . - Amoen. Exot. p. 227. "The king sat on the floor cross-legged, as is the custom of the country. He was covered with a yellow garment, which reached down to the feet when standing, but covered the feet for decency when sitting with his slippers off." Sir John Chardin's MS. note on this place of Isaiah is as follows: Grande marque de respect en orient de se cacher les pieds, quand on est assis, et de baisser le visage. Quand le souvrain se monstre en Chine et a Japon, chacun se jette le visage contre terre, et il n'est pas permis de regarder le roi ; "It is a great mark of respect in the East to cover the feet, and to bow down the head in the presence of the king."