Michael

The prince of the kingdom of Persia prevented me from coming for twenty-one days; but Mikha'el, one of the chief princes, came to assist me; so that I was no longer needed there with the kings of Persia.

nevertheless, I will tell you what is written in the Book of Truth. There is no one standing with me against them except Mikha'el your prince;

"When that time comes, Mikha'el, the great prince who champions your people, will stand up; and there will be a time of distress unparalleled between the time they became a nation and that moment. At that time, your people will be delivered, everyone whose name is found written in the book.

When Mikha’el, one of the ruling angels, took issue with the Adversary, arguing over the body of Moshe, he did not dare bring against him an insulting charge, but said, “May Adonai rebuke you.”

Next there was a battle in heaven — Mikha’el and his angels fought against the dragon, and the dragon and his angels fought back.