Prince of the celestial armies, commanded by God to drive the rebel angels out of heaven. Gabriel was next to him in command. (See Seven Spirits.)
Longfellow, in his Golden Legend, says he is the presiding spirit of the planet Mercury, and brings to man the gift of prudence.
The planet Mercury, whose place Is nearest to the sun in space. Is my allotted sphere; And with celestial ardour swift I bear upon my hands the gift Of heavenly prudence here.
The Miracle Play. iii.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894