What are Demons in the Bible?
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What are Demons in the Bible?


Demons, mysterious and malevolent spiritual beings, are a key aspect of Christian theology. They are mentioned numerous times throughout the Bible and have been the subject of endless fascination and fear for believers.

To gain a better understanding of these enigmatic entities, it is important to examine their biblical origins and explore their roles within the larger Christian narrative. In doing so, we can deepen our faith and sharpen our spiritual discernment as we confront the forces of darkness.

The concept of demons and their influence on humanity has been a part of religious belief systems since ancient times. Within the Christian tradition, demons are often understood as fallen angels who rebelled against God and now work to promote evil and chaos in the world.

This blog post will provide a detailed exploration of what the Bible teaches about demons, using the New King James Version (NKJV) as a primary reference. We will examine their nature, origins, and activities, as well as the power that believers have to resist and overcome their influence.

Demons in the bible

The Nature of Demons

Demons are spiritual beings, distinct from both humans and angels. They are typically described as malevolent and deceitful, with the power to exert negative influences on people’s lives. The Bible often refers to them as “unclean spirits” (Mark 1:23) or “evil spirits” (Luke 7:21).

They can possess individuals, causing physical and mental distress, as seen in the case of the man from the Gadarenes, who was possessed by a legion of demons (Mark 5:1-20).

While demons possess intelligence and power, they are not omnipotent or omniscient like God. They are limited beings who exist in rebellion against their Creator. Their ultimate goal is to undermine God’s purposes and lead people away from the truth.

The Origin of Demons

While the Bible does not provide a comprehensive account of the origin of demons, it is generally believed that they are fallen angels who sided with Lucifer (Satan) in his rebellion against God. In the book of Revelation, it is written that a great dragon, identified as Satan, was cast out of heaven along with his angels:

“And war broke out in heaven: Michael and his angels fought with the dragon; and the dragon and his angels fought, but they did not prevail, nor was a place found for them in heaven any longer. So the great dragon was cast out, that serpent of old, called the Devil and Satan, who deceives the whole world; he was cast to the earth, and his angels were cast out with him.” (Revelation 12:7-9, NKJV)

This passage suggests that demons are part of Satan’s army, which has been cast down to earth to oppose God and His people.

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Demonic Activities

Demons are active in the world, seeking to deceive and harm humanity. Some of their activities mentioned in the Bible include:

  1. Possession: Demons can possess and control individuals, causing physical and mental afflictions. The Gospels contain numerous accounts of Jesus casting out demons from those who were possessed (e.g., Matthew 8:28-34, Mark 1:23-27, and Luke 8:26-39).
  2. Temptation: Demons can tempt people to sin, as in the case of Satan tempting Jesus in the wilderness (Matthew 4:1-11). They seek to draw people away from God and His commandments.
  3. False Teaching: Demons can promote false teachings and doctrines to deceive believers. The Apostle Paul warned Timothy about this danger: “Now the Spirit expressly says that in latter times some will depart from the faith, giving heed to deceiving spirits and doctrines of demons” (1 Timothy 4:1, NKJV). It is crucial for Christians to remain vigilant and discerning, testing all teachings against the Word of God.
  4. Oppression: Demons can inflict suffering and oppression on individuals, as seen in the case of the woman who was bent over by a spirit of infirmity for eighteen years (Luke 13:10-17). Jesus set her free from this bondage, demonstrating His authority over demonic powers.
  5. Spiritual Warfare: Demons engage in spiritual warfare against believers, seeking to hinder their spiritual growth and effectiveness. The Apostle Paul wrote about the necessity of putting on the whole armor of God to stand against these forces of darkness (Ephesians 6:10-18).

The Authority of Believers Over Demons

Despite the power and influence of demons, believers in Jesus Christ have been given authority over them through His name. Jesus commissioned His followers to cast out demons as part of their ministry:

“And He called the twelve to Himself, and began to send them out two by two, and gave them power over unclean spirits.” (Mark 6:7, NKJV)

In the book of Luke, Jesus’ disciples returned from their mission rejoicing that even the demons were subject to them in His name:

“Then the seventy returned with joy, saying, ‘Lord, even the demons are subject to us in Your name.'” (Luke 10:17, NKJV)

As believers, we are called to resist the devil and his demonic forces, trusting in the power and protection of God. James 4:7 (NKJV) tells us, “Therefore submit to God. Resist the devil and he will flee from you.”


Demons are a significant aspect of the biblical narrative, representing the forces of darkness that work against God’s kingdom. They are malevolent spiritual beings that seek to deceive, harm, and oppress humanity. As fallen angels, they serve under Satan, the great adversary of God and His people.

However, the Bible also provides a message of hope and victory for believers. Jesus Christ demonstrated His authority over demons throughout His ministry, casting them out and delivering those who were afflicted.

This authority has been granted to His followers, empowering them to resist and overcome demonic influences in their lives.

In conclusion, it is essential for Christians to remain vigilant and discerning in the face of demonic activity. By grounding ourselves in the Word of God and relying on the power of the Holy Spirit, we can stand firm against the schemes of the enemy and continue to advance the kingdom of God on earth.

As we grow in faith and understanding, we can confidently proclaim the victory of Jesus Christ over all the powers of darkness, knowing that “He who is in you is greater than he who is in the world” (1 John 4:4, NKJV).

Pastor duke taber
Pastor Duke Taber

Pastor Duke Taber

All articles have been written or reviewed by Pastor Duke Taber.
Pastor Duke Taber is an alumnus of Life Pacific University and Multnomah Biblical Seminary.
He has been in pastoral ministry since 1988.
Today he is the owner and managing editor of 3 successful Christian websites that support missionaries around the world.
He is currently starting a brand new church in Mesquite NV called Mesquite Worship Center, a Non-Denominational Spirit Filled Christian church in Mesquite Nevada.