2 Timothy 2:23
But have nothing to do with foolish and ignorant speculations [useless disputes over unedifying, stupid controversies], since you know that they produce strife and give birth to quarrels.
Sometimes it’s best to not say a word and just walk away. Don’t get caught up in complaining with others, it will cause your own attitude to change. I understand you don’t want to be rude, but if you don’t do something, then you are contributing without realizing it. I know you feel stuck and cornered at times, say a quick prayer and I’ll give you the right words to speak. You can be firm and still show love, it’s a matter of how you deliver your words. If you work on this and are consistent, then others will not come to you to help fuel their fire. They can learn from you if you open yourself up and allow Me to work through you. So be mindful of where conversations are leading and have nothing to do with those that will only cause more problems between others.