Ariel (Hebrew: אריאל, Ari'el, Arael or Ariael‎‎) is an angel, possibly an archangel, found primarily in Jewish and Christian mysticism and Apocrypha. The name Ariel, "Lion of God" or "Hearth of God," occurs in the Hebrew Bible but as the name of an angel the earliest source is unclear. Ariel is the name of an angel in the apocryphal Ezra; also in Mathers, The Greater Key of Solomon, the Grand Grimoire, and other tracts of magic, where he is pictured as lion-headed.