“Seraphim” means burning, glowing

Seraphim: an order of celestial beings, whom Isaiah beheld in vision standing above Jehovah as he sat upon his throne. (Isaiah 6:2) They are described as having each of them three pairs of wings, with one of which they covered their faces (a token of humility); with the second they covered their feet (a token of respect); while with the third they flew. They seem to have borne a general resemblance to the human figure. ver. 6. Their occupation was two fold to celebrate the praises of Jehovah's holiness and power, ver. 3 and to act as the medium of communication between heaven and earth. ver. 6.