What did MLK mean when he said "justice rolls down like waters, and righteousness like a mighty stream" I looked it up online but I didn't understand any of the meanings online

Explanation:

Martin Luther King Jr. understood that life-giving water holds potential to be placid and potent, resilient and renewing, fluid yet forceful. In his historic “ I Have a Dream ” speech during the 1963 March on Washington, King declared: “We will not be satisfied until justice rolls down like waters and righteousness like a mighty stream.”

ps. i did found this i did not come up with this i do not want to take credit

The setting of an island might represent isolation, being far, not easy access or some kind of limitation. It also might mean frustration. As regards, her voyage to England, it might be said that it represents her growth, Annie became and adult. It might portrayed her transition from being a child to being an adult.