Where does the expression ''out of the mouth of a babes'' come from?

The expression "out of the mouths of babes" originates from The Bible, specifically Psalm 8:2, which speaks of how children can express profound truths and insights. It suggests that even the innocent and untainted voices of children can convey wisdom or reveal truths that adults may overlook. The phrase has since entered common vernacular, often used to highlight the unexpected wisdom that can come from young people.