In 3 John 1:9-10, the author, traditionally believed to be the Apostle John, addresses a church leader named Diotrephes. John expresses concern about Diotrephes' behavior, noting that he refuses to acknowledge John's authority and is spreading false accusations against him. This indicates a conflict within the church regarding leadership and respect for authority. John warns that if he visits, he will confront Diotrephes about his actions, which include rejecting fellow believers and attempting to control the church. This passage highlights issues of church governance and the importance of humility and acceptance among members of the Christian community.