The Archangel Michael is one of the most fascinating saints for his importance predates Christianity and he is currently revered by all three monotheistic religions. In Hebrew, his name (מִיכָאֵל) is pronounced mixäˈʔel and is translated who is like El, or God. In Greek, his name is Μιχαήλ, (Mikhaḗl) and in Arabic, ميخائيل (Mīkhā'īl.)
St. Michael was introduced to Christianity by the Jewish books of Enoch (around 300-100 BC) and Daniel (about 165 BC). Both books refer to Michael a great prince and he is seen as the protector of Israel. He is seen as a prince and soldier in the Hebrew apocryphal book War of the Sons of Light Against the Sons of Darkness and continues that role in the Christian Book of Revelation where he defeats Satan.
St. Michael is a very powerful Archangel sent by God to defend His people, especially at the end of time. He offers strength in times of spiritual warfare and is a very powerful advocate.