Definition and Nature
Demonic influence refers to the impact or control that evil spirits, known as demons, can exert over individuals, groups, or situations. In the biblical context, demons are fallen angels who rebelled against God and now serve Satan, the adversary of God and humanity. The Bible presents demonic influence as a real and present danger, manifesting in various forms, including temptation, oppression, possession, and deception.

Biblical References
The Bible provides numerous accounts and teachings regarding demonic influence. In the New Testament, Jesus frequently encounters and casts out demons, demonstrating His authority over them. For instance, in Matthew 8:16 , it is recorded, "When evening came, many who were demon-possessed were brought to Him, and He drove out the spirits with a word and healed all the sick."

Forms of Demonic Influence
1. Temptation: Demons can tempt individuals to sin, as seen in the account of Jesus' temptation in the wilderness (Matthew 4:1-11). Here, Satan himself attempts to lead Jesus astray, illustrating the subtle and persuasive nature of demonic temptation.

2. Oppression: Demonic oppression involves external pressure or harassment by evil spirits. This can manifest in physical, emotional, or spiritual distress. In Acts 10:38 , it is noted that Jesus "went around doing good and healing all who were oppressed by the devil, because God was with Him."

3. Possession: Demonic possession is a more severe form of influence where a demon inhabits and controls an individual. The Gospels provide several examples, such as the Gerasene demoniac in Mark 5:1-20, where Jesus commands the unclean spirit to leave the man, restoring him to his right mind.

4. Deception: Demons are also known for spreading false teachings and leading people away from the truth. In 1 Timothy 4:1 , Paul warns, "The Spirit clearly says that in later times some will abandon the faith and follow deceiving spirits and things taught by demons."

Resistance and Deliverance
The Bible instructs believers on how to resist demonic influence. James 4:7 advises, "Submit yourselves, then, to God. Resist the devil, and he will flee from you." Ephesians 6:11-12 encourages Christians to "Put on the full armor of God, so that you can make your stand against the devil’s schemes. For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this world’s darkness, and against the spiritual forces of evil in the heavenly realms."

Deliverance from demonic influence is possible through the power and authority of Jesus Christ. Believers are called to pray, seek God's protection, and rely on the Holy Spirit for guidance and strength. The practice of exorcism, or casting out demons, is depicted in the New Testament as a ministry of Jesus and His disciples, emphasizing the authority of Christ over all spiritual forces.

Conclusion
Demonic influence is a significant theme in the Bible, highlighting the reality of spiritual warfare and the need for vigilance and reliance on God's power. Through faith in Jesus Christ and adherence to biblical teachings, believers can overcome the influence of demons and live in the freedom and victory that Christ provides.