1 John 2:12-14
12 “I am writing to you, little children, because your sins have been forgiven you on account of His name. 13 I am writing to you, fathers, because you know Him who has been from the beginning. I am writing to you, young men, because you have overcome the evil one. I have written to you, children, because you know the Father. 14 I have written to you, fathers, because you know Him who has been from the beginning. I have written to you, young men, because you are strong, and the word of God remains in you, and you have overcome the evil one.”
Your sins have been forgiven: John is reminding Christians that their sins have been forgiven once and for all. In contrast to 1 John 1:9 which is an invitation for unbelievers to recognize their sins and receiving forgiveness and cleansing, John now addresses Christians who have been forgiven past tense because of the blood of Christ.
You have overcome the evil one: There is not a single reference from Romans to Revelation about casting out demons. Christians are not to spend their lives casting out demons. Instead, we are to present the Gospel to people that they may believe and be delivered from the influence of the evil one. All who are in Christ have overcome the evil one.
