Every sentence of this extended passage is a distinct revelation and is worthy of long and careful study.  Only a passing reference can be made to it here.  The passage is as follows: 

“Moreover the word of the Lord came unto me, saying, Son of man, take up a lamentation upon the King of Tyrus, and say unto him, Thus saith the Lord God; Thou sealest up the sum, full of wisdom, and perfect in beauty.  Thou hast been in Eden the garden of God; every precious stone was thy covering, the sardius, topaz, and the diamond, the beryl, the onyx, and the jasper, the sapphire, the emerald, and the carbuncle and gold:  the workmanship of thy tabrets and of thy pipes was prepared in thee in the day that thou wast created.  Thou art the anointed cherub that covereth; and I have set thee so:  thou wast upon the holy mountain of God; thou hast walked up and down in the midst of the stones of fire.  Thou wast perfect in thy ways from the day thou wast created, till iniquity was found in thee.  By the multitude of thy merchandise they have filled the midst of thee with violence, and thou hast sinned:  therefore I will cast thee as profane out of the mountain of God:  and I will destroy thee, O covering cherub, from the midst of the stones of fire.  Thine heart was lifted up because of thy beauty, thou hast corrupted thy wisdom by reason of thy brightness:  I will cast thee to the ground, I will lay thee before Kings, that they may behold thee.  Thou hast defiled thy sanctuaries by the multitude of thy iniquities, by the iniquity of thy traffic; therefore will I bring forth a fire from the midst of thee, it shall devour thee, and I will bring thee to ashes upon the earth in the sight of all them that behold thee.  All they that know thee among the people shall be astonished at thee:  thou shalt be a terror, and never shalt thou be any more.”

This passage describes much of the early and latter career of Satan.  Twice is his creation referred to.  In verse fifteen it is stated that he was created perfect, and in verse thirteen that perfection is set forth in detail by the suggestive symbols of precious gems.  He was also “full of wisdom,” “perfect in beauty,” filling up the sum of perfection.  In verse fourteen he is called the “anointed cherub that covereth.”  By this the purpose of the Creator is revealed.  The general interpretation of this verse is that Satan was created as a guard or protector to the throne of the Most High.  This is reasonable.  Like the golden cherubim, covering the visible mercy seat in the Holy of Holies of the earthly tabernacle, he was created a guard and covering cherub to the heavenly center of Glory.  It is expressly stated that he was located by the Most High upon the holy mountain of God, the mountain of God being a symbol of the center of God’s power, government, and eternal throne (Ps. 48:1; 68:15; Isa. 2:2).  Over this exalted throne Satan was set as a covering cherub.  He is also said to have been in “Eden, the garden of God,” which is evidently another Eden than that in which Satan appeared as a serpent.  It is probably a reference to the primitive creation, and the whole passage suggests a position of great authority for which he was created and anointed; a position from which he fell, drawing with him a host of beings over whom he had governing influence and power.