In this verse, the apostle John addresses his readers with affection, calling them 'dear friends,' and emphasizes that the command he refers to is not something new or unfamiliar. Instead, it is an 'old' command, one that has been with them from the beginning of their faith journey. This underscores the idea that the core teachings of Christianity, particularly the command to love one another, are not novel concepts but have been integral to the faith since its inception.
John's message serves as a reminder that the fundamental principles of love and obedience to God's word are timeless. These principles were taught by Jesus and have been passed down through generations. By emphasizing the continuity of this command, John reassures believers that they are part of a long-standing tradition of faith that remains relevant and vital. This encourages Christians to hold fast to these enduring truths, recognizing their importance in guiding their lives and relationships with others.