Only here do we read of _seraphim:_ elsewhere we read of _cherubim_ (Gen. iii. 24; Ezek. x. 1-22, &c.); and of _living ones_ (Rev. iv. 6-8). From the fact that these "living ones" in some respects resemble both the "seraphim" of Isaiah and the "cherubim" of Ezekiel, some eminent scholars believe these are three names for one order of beings. Others, with whom we are disposed to sympathise, believe that the two names "cherubim" and "seraphim" really indicate two orders of spiritual intelligences, resembling each other, yet distinct. Whether the "living ones" of the Apocalypse are cherubim, or seraphim, or a third order of exalted ministers of the Most High, is a question concerning which we cannot speak confidently. Scholars are divided as to the significance of the name "seraphim:" some derive the word from a root signifying _to burn,_ others from a root signifying _to be exalted._ But there can be no question that the descriptions of the "seraphim," the "cherubim," and the "living ones" are symbolical; the terms employed are figures adapted to convey to our minds true descriptions of beings of whom a literal description would now be unintelligible by us.[1] _"Wings"_ are symbols of swiftness:[2] here the symbol is triplicated to indicate the exceeded swiftness--the immense energy--of these messengers of God (Ps. civ. 4). _"With twain he covered his face,"_ in token of humility. _"With twain he covered his feet,"_ in token of reverence. _"With twain he did fly,"_ in token of readiness to do God's will--three points in which we should strive evermore to resemble these exalted intelligences. To them is granted an immediate vision of God, and the effect upon them is expressed by their song: _"Holy,"_ &c.