" preach to the choir "

 [ "preaching to the choir" ]

1: Preaching to the choir means you are trying to make believers out of people who already believe, or convince people who are already convinced.

  * e.g.,  ... "We could start a new tradition, Birthdays without Boyfriends. It could work." 

 [ "Preach to the choir" ]

1: It’s a metaphor which basically means tell us something we don’t already know. Usually pertains to a conversation about something related to politics or religion but could mean anything . In church there’s always a preacher every Sunday. The choir boys and girls are the people who sing the melodies. So basically the choir has heard everything the preacher has to say every Sunday. Does newcomers would not have heard what the preacher had said. So when somebody says preach to the choir the metaphor actually means that the choir has already heard everything the preacher has to say. So if somebody’s rambling on and on about a subject that you already know about and agree with you could say well you’re preaching to the choir LOL get it?

  * e.g.,  ... Donald trump is an idiot And is the worse president ever !Ya preach to the choir their buddy . 

 [ "Preaching to the Choir" ]

1: Spending time trying to convince people who are already behind you.

  * e.g.,  ... HR won't hire this guy. They want someone who can "hit the ground running". They must be waiting on a "purple unicorn". I apologize, I'm "preaching to the choir". (LOL. That was 3 metaphors in one explanation. I recommend using Urban Dictionary to look of the other two metaphors) 

 [ "preaching to the choir" ]

1: Extolling/defaming a cause to people convinced of it's greatness/horridness. Etymology is obviously from christian church choirs.

  * e.g.,  ... Playmate: Sex sells 

 [ "you are preaching to the choir" ]

1: Another way to say I agree

  * e.g.,  ... Person 1: Do you think we should move the table?