First John is a book in the New Testament of the Christian Bible, traditionally attributed to the Apostle John. It is a letter addressed to early Christians, emphasizing the importance of love, faith, and the nature of God. The text encourages believers to live in accordance with God's commandments and to recognize Jesus as the Son of God. The letter also addresses issues of false teachings and the assurance of salvation. It highlights the significance of loving one another as a reflection of God's love and stresses the importance of living in truth. Overall, First John serves as a guide for Christian living and community.