From another forum:
“Some trinitarian sites claim that no one ever thought that Jesus is Michael until Charles Taze Russell {
Note EGW!] presented his teaching on such. This, however, can be shown not to be true, as even many trinitarians have claimed that Jesus is Michael the Archangel:”
“Michael may mean an angel; but I embrace the opinion of those who refer this (Michael) to the person of Christ, because it suits the subject best to represent him as standing forward for the defense of his elect people.” - John Calvin, Commentaries on the Book of the Prophet Daniel, trans. T. Myers (Grand Rapids: Baker Book House, 1979), vol. 2 p. 369.
“The earlier Protestant scholars usually identified Michael with the pre-incarnate Christ, finding support for their view, not only in the juxtaposition of the ‘child’ and the archangel in Rev 12, but also in the attributes ascribed to him in D[a]n[ie]l .” – John A. Lees, The International Standard Bible Encyclopedia, 1930, Vol. 3, page 2048
"There seems good reason for regarding Michael as the Messiah. Such was the opinion of the best among the ancient Jews… With this all the Bible representations of Michael agree. He appears as the Great Prince who standeth for Israel (Dan. xii. I), and he is called “the Prince of Israel” (Dan. x. 21) – William L. Alexander, ed., A Cyclopedia of Biblical Literature, originally edited by John Kitto, 3d ed. (Edinburgh: A. & C. Black, 1886). vol. 3, p. 158.
Theodore Beza:
Daniel 10:13- Even though God could by one angel destroy all the world, yet to assure his children of his love he sends forth double power, even Michael, that is, Christ Jesus the head of angels.
bible.crosswalk.com/Commentaries/GenevaStudyBible/gen.cgi?book=da&chapter=010.
Daniel 12:1 - The angel here notes two things: first that the Church will be in great affliction and trouble at Christ’s coming, and next that God will send his angel to deliver it, whom he here calls Michael, meaning Christ, who is proclaimed by the preaching of the Gospel.
bible.crosswalk.com/Commentaries/GenevaStudyBible/gen.cgi?book=da&chapter=012
John Wesley:
Daniel 10:13 Withstood me - God suffered the wicked counsels of Cambyses to take place awhile; but Daniel by his prayers, and the angel by his power, overcame him at last: and this very thing laid a foundation of the ruin of the Persian monarchies. Michael - Michael here is commonly supposed to mean Christ. I remained - To counter - work their designs against the people of God.
Daniel 10:21 - Michael - Christ alone is the protector of his church, when all the princes of the earth desert or oppose it.
bible.crosswalk.com/Commentaries/WesleysExplanatoryNotes/wes.cgi?book=da&chapter=010.
Daniel 12:1 - For the children - The meaning seems to be, as after the death of Antiochus the Jews had some deliverance, so there will be yet a greater deliverance to the people of God, when Michael your prince, the Messiah shall appear for your salvation.
bible.crosswalk.com/Commentaries/WesleysExplanatoryNotes/wes.cgi?book=da&chapter=012
Adam Clarke:
But lo, Michael
Daniel 10:13 - Gabriel, who speaks, did not leave Cyrus till Michael came to take his place. Michael, he who is like God, sometimes appears to signify the Messiah, at other times the highest or chief archangel. Indeed there is no archangel mentioned in the whole Scripture but this one. See Jude 1:9; Revelation 12:7.
studylight.org/com/acc/view.cgi?book=da&chapter=10&verse=13#Da10_13
John Gill:
Daniel 10:13 - but, lo, Michael one of the chief Princes, came to help me; called in the New Testament an Archangel, the Prince of angels, the Head of all principality and power; and is no other than Christ the Son of God, an uncreated Angel; who is “one”, or “the first of the chief Princes” {x}, superior to angels, in nature, name, and office.
studylight.org/com/geb/view.cgi?book=da&chapter=10&verse=13
Daniel 10:21 - and there is none that holdeth with me in these things, but Michael your Prince; Christ the Prince of the kings of the earth, he was the Prince, Protector, and Guardian of the people of the Jews; he is the Angel that went before them in the wilderness, and guarded them in it, and guided them into the land of Canaan
studylight.org/com/geb/view.cgi?book=da&chapter=010&verse=021
Daniel 12:1 - 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
studylight.org/com/geb/view.cgi?book=da&chapter=012&verse=001
Matthew Henry:
Daniel 12:1 - The angel had told Daniel what a firm friend Michael was to the church, ch. 10:21. He all along showed this friendship in the upper world; the angels knew it; but now Michael shall stand up in his providence, and work deliverance for the Jews, when he sees that their power is gone, Deu. 32:3. 6. Christ is that great prince, for he is the prince of the kings of the earth, Rev. 1:5.
bible.crosswalk.com/Commentaries/MatthewHenryComplete/mhc-com.cgi?book=da&chapter=012