All of them have left their indelible destructive imprint simply because they opened their mouths before thinking. And haven't we all done the same thing??
The Bible is very clear about one's speech. It says in Luke Chapter 6, "For out of the overflow of his heart his mouth speaks." The Bible warns us to be careful about what we say and reminds us that words may be small but they have the power to change the world. God's word reminds us to look at what's in our heart before we speak.
We all need to choose our words more wisely.