Archangels are mentioned throughout sacred Scripture in their unique role as God’s messengers to people at critical times in the salvation process (Jude 9; 1 Thess. 4:16; Dan. 10:13, 21; 12:1). The archangel Michael is introduced as the leader of the faithful angels in their struggle against the rebel angels led by Lucifer, or Satan, who made war in heaven against the will of God (Rev. 12:7-9).