“I am the cause of floods tornadoes hurricanes and earthquakes I kill millions and cause the deaths of God’s enemies I am the angel of death and the warrior of God’s armies,”
“Fear thy wrath and justice of the Lord or parish in the lake of fire and torment,”
Angels don’t actually serve God. They (along with demons) are older than the Abrahamic religions. From my understanding, they don’t serve anyone. They just do their part in maintaining the universe.
Archangel Michael exists in the Christian - Jewish - Islamic traditions. So you would need to look for that text, where exactly it’s from, and you will know which God he’s talking about.
If that text is from someone channeling or visualizing or whatever then no need to look anywhere. Save your time and energy, he’s talking about whatever God that person wants him to talk about, consciously or subconsciously, so better ask that person.