Depends, doesn’t it?
If our intent is to hurt and harm with our words, then that’s something altogether separate from our words being meant well but interpreted incorrectly and causing harm.
This is on a post-it note on my desk: “Reflect on what you plan to say before you say it. Why are you speaking? Are you avoiding the extremes of brutal honesty and in-authenticity?”
And then there’s Ben Sira 28:12-26 (excerpts below).
If you blow on a spark, it turns into flame,
if you spit on it, it dies out;
yet both you do with your mouth!
A blow from a whip raises a welt,
but a blow from the tongue will break bones.
Many have fallen by the edge of the sword,
but not as many as by the tongue.
Happy the one who is sheltered from it,
and has not endured its wrath
As you fence in your property with thorns,
so make a door and a bolt for your mouth.
As you lock up your silver and gold,
so make balances and scales for your words.
Take care not to slip by your tongue
and fall victim to one lying in ambush.