2 Timothy 2:23

This is the third time Paul is warning about this kind of chatter. Here he calls them foolish, ignorant controversies. It is certainly foolish and something that would be foolish to talk about. In addition, the controversies are missing something in such a way that makes them ignorant. It's as if these controversies are like a person and holding certain qualities of a person that describe what the controversies are. Either way, these controversies aren't good and he mentions how they breed quarrels. It's not a simple mention, but he reminds them, saying that they know this about these controversies. They already know it breeds quarrels, so they should listen to what Paul is saying and avoid them.