Commenting on Jude 9 he wrote:
Yet Michael the archangel, &c.] By whom is meant, not a created angel, but an eternal one, the Lord Jesus Christ; as appears from his name Michael, which signifies, "who is as God": and who is as God, or like unto him, but the Son of God, who is equal with God? and from his character as the archangel, or Prince of angels, for Christ is the head of all principality and power; and from what is elsewhere said of Michael, as that he is the great Prince, and on the side of the people of God, and to have angels under him, and at his command, Dan. 10:21, 12:1; Rev. 12:7. So Philo the Jew {o} calls the most ancient Word, firstborn of God, the archangel. . . .
Commenting on Revelation 12:7, he wrote:
Michael and his angels fought against the dragon: by whom is meant not a created angel, with whom his name does not agree, it signifying "who is as God"; nor does it appear that there is anyone created angel that presides over the rest, and has them at his command. . . .
Commenting on Daniel 12:1, he wrote:
And at that time shall Michael stand up, &c.] The Archangel, who has all the angels of heaven under him, and at his command, the Son of God, our Lord Jesus Christ; who is as God, as the name signifies, truly and really God, and equal in nature, power, and glory, to his divine Father. . . .