Who is Satan?

QUESTION?

Was Satan a seraphim? Why was he booted out of heaven? “Who is Satan? 

ANSWER!

Jewish Rabbinical tradition asserts that he was the most important spirit standing by God's throne. He had twelve wings, twice as many as the Seraphim.” This is why Catholic tradition says that he is a seraphim, because he has twice as many wings as the most powerful angels in heaven, this indicates that he is the most powerful Seraphim.

“Satan, worst of the devils or demons, was of the Seraphim, greatest and most powerful of the angels that fell. The Latin expression – ‘Corruptio optima, pesima means the corruption of the best becomes the very worst”’ (THE END – DR Hahn Bible Study).

The beginning of Satan's fall was due to 'Pride,' he desired to become greater than an angelic creature, he wanted to become independent of God, in short he coveted the place rightfully belonging to God. St Thomas Aquinas saysSatans original sin was “pride” http://www.catholic.com/encyclopedia/devil. 

Because of this victory, St. Michael is revered in Catholic tradition and liturgy as the protector of the Church, as once he was regarded as the protector of the Israelites. In the Eastern Church, as well as among many theologians in the West, St Michael is placed over all the angels, as prince of the Seraphim. He is the special patron of sick people, mariners, and grocers; in Asia Minor many curative springs were dedicated to him. His cult has also been popular in Egypt, Rome, France, and Germany. His emblems are a banner, a sword, a dragon, and scales. The name Michael is a variation of Micah, meaning in Hebrew, "Who is like God?"

Saint Michael, Archangel. Scriptural Saint. Celebration of Feast Day is September 29 [Taken from "Lives of Saints", Published by John J. Crawley & Co., Inc].

Regarding his rank in the celestial heirachy http://www.newadvent.org/cathen/07322c.htm opinions vary; St. Basil (Hom. de angelis) http://www.newadvent.org/cathen/02330b.htm and other Greek http://www.newadvent.org/cathen/05230a.htm Fathers http://www.newadvent.org/cathen/06001a.htm, also Salmeron http://www.newadvent.org/cathen/13402b.htm, Bellarmine http://www.newadvent.org/cathen/02411d.htm, etc., place St. Michael over all the angels http://www.newadvent.org/cathen/02330b.htm; they say he is called "archangel" because he is the prince of the other angels; others (cf. P. Bonaventura, op. cit.) believe that he is the prince of the seraphim http://www.newadvent.org/cathen/13725b.htm, the first of the nine angelic http://www.newadvent.org/cathen/01476d.htm orders [St Michael Archangel - http://www.newadvent.org/].