Proverbs 16:2 (ERV)
Kind words are like honey; they are easy to accept and good for your health.
Colossians 4:6(ERV)
When you talk, you should always be kind and wise. Then you will be able to answer everyone in the way you should.
Proverbs 25:11(ERV)
Saying the right thing at the right time is like a golden apple in a silver setting.
A quick search of the bible can bring up a lot of advice on how to speak kindly. Words often ignored in the name of whatever 'crusade we' are embarking on.