Second John is a brief letter in the New Testament of the Bible, traditionally attributed to the Apostle John. It is addressed to a chosen lady and her children, emphasizing the importance of love and truth in the Christian faith. The letter warns against false teachers who do not acknowledge Jesus Christ as coming in the flesh. It encourages believers to remain steadfast in their faith and to walk in love, highlighting the significance of adhering to the teachings of Christ and living a life that reflects His commandments.