Sounds to me like Paul was warning the folks in Ephesus not to get sidetracked by myths and false teachers (like the Mormons)
Warning Against False Teachers of the Law
3 As I urged you when I went into Macedonia, stay there in Ephesus so that you may command certain men not to teach false doctrines any longer 4 nor to devote themselves to myths and endless genealogies. These promote controversies rather than God’s work–which is by faith. 5 The goal of this command is love, which comes from a pure heart and a good conscience and a sincere faith. 6 Some have wandered away from these and turned to meaningless talk. 7 They want to be teachers of the law, but they do not know what they are talking about or what they so confidently affirm.