1 John 4:4 New American Standard Bible 4 You are from God, little children, and have overcome them; because greater is He who is in you than he who is in the world.
We have overcome because Jesus has overcome. Through Jesus Christ, The Holy Spirit lives inside us. The same Spirit that raised Christ from the dead is He who lives within us. All the power and mighty of who God is, is living inside us. The Holy Spirit desires to lead, guide, direct, immerse, empower, and equip our lives to be as effective as we can for God and His kingdom.
John writes “you are from God, little children”. At this point in his life John was an older man and would have been seen as the spiritual father of man. He would have been the last living original disciple who actually walked with Jesus Christ personally during His earthly ministry. John was greatly transformed by His relationship with Jesus and when God spoke, people listened.
John was concerned with the believers of his dead. False teaching and teachers were trying to infiltrate the church. Their presence and their popularity were intimidating to some of the believers. But John makes it clear that the believers have overcome them. Through their relationship with Jesus Christ, they had the victory.
John points out that He who is in us is greater than he who is in the world. As believers in Christ we are surround by the enemy on all sides. Without a knowledge of the truth we simply live as victims to the schemes and purposes of Satan. But in Christ we are set free. We have nothing to fear. God Himself lives inside of us and when we rely and surrender all things to Him, we place every battle in His hands.