Angels are spiritual beings with personal free will. They exercise their liberty (Luke 8:28-31; 2 Timothy 2:26; Jude 6), are intelligent (Matthew 8:29; 2 Corinthians 11:3; 1 Peter 1:12), and have emotions (Luke 2:13; James 2:19; Revelation 12:17). And this is true of both the good and evil angels.
The rebellion of Lucifer is proof of how angels have free will. The Bible says, “Thine heart was lifted up because of thy beauty, thou hast corrupted thy wisdom by reason of thy brightness” (Ezekiel 28:17). “For thou hast said in thine heart, … I will exalt my throne above the stars of God: … I will be like the most High” (Isaiah 14:13, 14).
So, because of Lucifer’s pride, “there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, And prevailed not; neither was their place found any more in heaven. And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him” (Revelation 12:7-9).
By his deception, this evil leader won the support of one-third of the angels (Revelation 12:3, 4) and caused a division in heaven. For his aim was to take God’s throne and receive the worship of all God’s created beings.
This angel of darkness was called Satan (adversary) and devil, after his expulsion from heaven (slanderer). And his angels were called demons. Thus, the majority of the angels used their free will to align with God while the rest used it to oppose Him.
In His service,