Like the cherubim (see 211) the seraphim were a sort of angel. (“Seraphim” is plural—one seraph, two seraphim.) Their name means, so far as we know, “burning ones.”
They are mentioned in Isaiah’s vision in the temple, and they made quite an impression: “Each one had six wings: with two he covered his face, with two he covered his feet, and with two he flew” (Isa. 6:2).