seraphim

Hath not he also said, "He must, last of all, drink the blood of the infant from the crystal cup of the king and the seraphim?"

One little pleasant sentence spoken in the morning will ring all day in a sensitive heart like the song of a seraphim.

Above the throne, or rather round it, like the courtiers surrounding the throne of an Eastern monarch, stand the seraphim.

He's almost up to where 'the cherubim and seraphim continually do sing.'

His ranks of the Cherubim are beside Him, and the armies of the Seraphim are dreadful.