this.

Reckless words pierce like a sword, but the tongue of the wise brings healing. // Proverbs 12:18

Even a fool is thought wise if he keeps silent, and discerning if he holds his tongue.// Proverbs 17:18

When words are many, sin is not absent, but he who holds his tongue is wise. // Proverbs 10:19

What you say affects the hearts of people around you.

Fragile hearts are like emotion-sponges. 

Watch what you say. I’m okay, I have truth, your judgements distract that.