The book of 2 John is a short letter in the New Testament of the Christian Bible, traditionally attributed to the Apostle John. It is addressed to "the chosen lady and her children," which may refer to a specific woman and her family or symbolize a church community. The letter emphasizes the importance of love, truth, and obedience to God's commandments. In 2 John, the author warns against false teachers who deny the true nature of Jesus Christ. He encourages believers to remain steadfast in their faith and to avoid those who do not adhere to the teachings of Christ. The letter serves as a reminder to uphold the truth and maintain love within the Christian community.