If you think you have to scream to get your message across to your children, your students, your congregation, you are mistaken.
One of the great secrets of teaching is that the quieter you get, the more students will listen. Teachers just entering the profession are naturally inclined to raise their voice to the students, but pretty soon no one will listen to a screaming teacher.
Why would anyone want to worship where the preacher screams at the top of his lungs at them? Screaming teaching is a mistake….a big one.