John Gill was a master of ancient languages and is a commentator highly respected by conservative Christians.
Here is another commentary that sheds light on the matter.
Heading:
Prophecies Against Tyre and a Brief Fragment Against Sidon
(Ezek. 26:1 – 28:26)
<< Chapter 28 turns from the city to the ruler who is called “the prince of Tyre.” He personifies the spirit of the proud metropolis. A severe indictment is brought against him as the prophet specifies the particular sin which was the foundation for all the other iniquities. By equating himself with God, the prince committed blasphemy. He attributed all his prosperity to his own wisdom and ruled out any dependence on God.. A terrible fate awaits him.
Verses 11-19 contain the final prophecy which is a lamentation over the king. The prince of Tyre is symbolically placed in the Garden of Eden where there is perfection. Because of his great desire for splendor, his pride led him to corruption. Those who sought his punishment were appalled because of his dreadful end. >>
The commentary considers the possibility that Tyre is a veiled reference to Babylon but finds this unlikely. It doesn’t mention Satan.
Source:
The Teacher’s Bible Commentary, Editors: H. Franklin Paschall, OT, and Herschel H. Hobbs, NT
Nashville, TN: Broadman Press, 1972; p. 2508-511, especially 510.
While I have the utmost respect for anyone who through their great learning and intellect have written commentaries on scripture, they do not necessarily have the last word. Not so revelation was known in the 18th century, when Gill was alive. Same with later expositors, even those of today. We will always be learning even in eternity.
KJV Ezekiel 28:12-15
12 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.
13 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.
14 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.
15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
Clearly, the King of Tyre was a type of Lucifer, and Ezekiel in his description of the King was informing us of the character and nature also Lucifer. The King of Tyre was not an anointed cherub. He was not in Eden. He did not walk up and down before the throne of God. He did not stand in reverent awe and protection over God's laws.
KJV Exodus 25:18-22
18 And thou shalt make two cherubims of gold, of beaten work shalt thou make them, in the two ends of the mercy seat.
19 And make one cherub on the one end, and the other cherub on the other end: even of the mercy seat shall ye make the cherubims on the two ends thereof.
20 And the cherubims shall stretch forth their wings on high, covering the mercy seat with their wings, and their faces shall look one to another; toward the mercy seat shall the faces of the cherubims be.
21 And thou shalt put the mercy seat above upon the ark; and in the ark thou shalt put the testimony that I shall give thee.
22 And there I will meet with thee, and I will commune with thee from above the mercy seat, from between the two cherubims which are upon the ark of the testimony, of all things which I will give thee in commandment unto the children of Israel.
KJV Hebrews 8:1-5
1 Now of the things which we have spoken this is the sum: We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens;
2 A minister of the sanctuary, and of the true tabernacle, which the Lord pitched, and not man.
3 For every high priest is ordained to offer gifts and sacrifices: wherefore it is of necessity that this man have somewhat also to offer.
4 For if he were on earth, he should not be a priest, seeing that there are priests that offer gifts according to the law:
5 Who serve unto the example and shadow of heavenly things, as Moses was admonished of God when he was about to make the tabernacle: for, See, saith he, that thou make all things according to the pattern shewed to thee in the mount.
In other words. The temple and it's furniture, the priesthood, it's services and all the feast days and offerings and sacrifices, all pointed to Christ Who would officiate as the ultimate High Priest in the true sanctuary in heaven upon which the earthly was a small scaled model. This includes the cherubim whose likeness was placed upon the ark. These 2 cherubim 'covered "the mercy seat... The throne of God under which was the foundation of all good government in heaven and earth... The law. Lucifer was one of those covering cherubs, second only to Christ Himself in rank and power.