1. Angels have been created by God (Colossians 1:16; Psalms 148:2,5). 

2. Angels are spirit beings (Psalm 104:4). Angels do not have a material body (Luke 24:39). 

3. Angels are not omniscient (Matthew 24:36). 

4. Angels are not omnipresent (they are created beings). 

5. Angels were created without sin (Ezekiel 28:15). 

6. Prior to the fall of man Lucifer led a rebellion against God.  Lucifer “the Shining One” then became Satan “the Adversary” and the rebelling angels became demons (also called "unclean spirits" Matthew 10:1).  This rebellion is described in Ezekiel 28:12-19 and in Isaiah 14:12-15. 

7. Ministry of Good Angels. 

a) Angels glorify Jesus Christ (Hebrews 1:6). 

b) Angels worship God (Isaiah 6:3). 

c) Angels serve God (Luke 1:26; 22:43; Matthew 28:2). 

d) Angels minister to believers (Hebrews 1:14).

a) Under the leadership of Satan demons attempt to withstand the work of God (1 Thessalonians 2:18; Daniel 10:12,13). 

b) Demons can possess unsaved men (Matthew 4:24). Demonic possession is the act of a demon or demons inhabiting the body of a person and taking control of his mind and body.  Believers cannot be demon possessed or partially controlled” by demons (1 John 4:4). 

c) Demons can inflict disease on men (Matthew 9:32,33).   However, not all disease is caused by demons (a distinction is made in Acts 5:16). 

d) Demons can possess animals (Mark 5:13). 

e) Demons attempt to withstand the spiritual growth of Christians (Ephesians 6:12). 

f) Demons disseminate false doctrine (I Timothy 4:1).

a) Satan and all fallen angels will eventually be consigned to eternal torment in Hell (Revelation 20:10; Matthew 25:41).