The passage is a letter from John reassuring believers that though antichrists have come, signaling the last days, believers have been anointed by God and have knowledge through the Holy Spirit. John encourages believers by reminding them that though some have left the faith, showing they were not truly of them, believers have overcome the evil one and their sins are forgiven through Christ. He exhorts believers to abide in Christ by keeping his commandments and walking as he walked, and to not love the world or things of the world, which are passing away, but to do the will of God to abide forever.