In case his readers questioned the authority by which the apostles delivered their message, John reminds them that this message is not human but divine, and the divine message is “that God is light and in Him is no darkness at all” (1:5). The comparison between light and darkness is a very common expression throughout Scripture with light representing truth/purity and darkness illustrating error/sin. Light has no connection with darkness and they cannot exist together. Where there is light, there can be no darkness and where there is darkness, there can be no light. Although the false teachers were declaring that they were “enlightened”, John claimed that their message and actions revealed otherwise. If a person says that they know God, but does not practice His ways, they are lying (1:6); however, those who follow God’s ways (truth) prove that they have “fellowship with one another, and the blood of Jesus Christ His Son cleanses us [them] from all sin” (1:7b).
The false teachers of Gnosticism thought that they were truly enlightened and free from sin, but John wrote the following words to expose their erroneous beliefs, “If we say that we have no sin, we deceive ourselves, and the truth is not in us” (1:8). At a later time John writes, “If we say that we have not sinned, we make Him a liar, and His word is not in us” (1:10). Much like the Pharisees of Jesus’ day, these teachers did not believe they were sinners. Jesus’ encounter with the rich young ruler in Matthew 19:16-22 reveals the necessity for someone to recognize their sinfulness before they can follow Christ. In contrast with the arrogant and proud, those who willingly admit their sinfulness are given the following promise on the condition of confession, “If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness” (1:9). When a person is fully aware of their sinfulness and confesses, God will grant forgiveness and cleansing.
John then writes to those who believe, “My little children, these things I write to you, so that you may not sin. And if anyone sins, we have an Advocate [Helper] with the Father, Jesus Christ the righteous. And He Himself is the propitiation [appeasement] for our sins, and not for ours only but also for the whole world” (2:1-2). When a believer surrenders to the Holy Spirit, He can provide the power not to sin (Romans 6:12-14); however, when a follower of Christ does sin, he must remember that he has been acquitted of all punishment through the payment of Jesus on the cross. So, the first major difference between the teachings of the apostles and the false teachers is their view of sin. The apostles knew they were sinners, but believed they were forgiven based on Jesus’ death on the cross; however, the false teachers denied their sin and saw no need for repentance.
Dear God, thank You for offering forgiveness and cleansing to all who confess and believe in Your Son, Jesus.