You needed to warn them to stop wasting their time on senseless stories and endless lists of ancestors. Such things only cause arguments. They don't help anyone to do God's work that can only be done by faith.
Don't let anyone forget these things. And with God as your witness, you must warn them not to argue about words. These arguments don't help anyone. In fact, they ruin everyone who listens to them.
But don't have anything to do with stupid arguments about ancestors. And stay away from disagreements and quarrels about the Law of Moses. Such arguments are useless and senseless.