preach to the choir

Definition

To speak as if to convince a person or group of something they already believe.

Example Sentences

• "Jay Branegan says each side will be preaching to the choir. "Democrats will make the argument that's been successful with their base […] [that] Republicans are merely helping the rich.""
• "It hardly needs saying that converting a Tory in a swingable “blue wall” constituency is electorally far more valuable than preaching to the choir in a Labour stronghold."