Jofiel was one of angels stationed on Heaven and a "Meter Man" of Heaven.
At some point, while he was inspecting Heaven's chambers with an unknown apparatus, he encountered Lucifer. When he tried to warn his brothers and sisters about Lucifer's breaching, Lucifer exploded him.
When another angel inquired Lucifer about the murder of Jofiel, Lucifer blamed Jofiel for his own death.
The angel Jofiel or Jophiel (Heb. יוֹפִיאֵל, "beauty of God", "divine beauty"), also called Iophiel, Iofiel, Yofiel, Youfiel, Zophiel (Tsophiel צֹפִיאֵל, "spy of God", "watchman of God") and Zuriel (Tsuriel צוּרִיאֵל, "my rock is God"), is the archangel of wisdom, understanding, and judgment. He is listed as one of the Seven Archangels in Pseudo-Dionysian teachings.
At some points, he shared similar traits with Nithael.
Nithael's name means "God, the king of heaven". It is also ironic, as he (in Supernatural-verse) was a lesser angel. Like Nithael, Jofiel also bears a great name, but was a lower-ranking angel.