drive something home
US /draɪv ˌsʌmθɪŋ ˈhoʊm/
UK /draɪv ˌsʌmθɪŋ ˈhoʊm/

1.
to make something clearly understood by using examples, emphasizing it, or repeating it
:
•
The coach used a video replay to drive home the importance of teamwork.
•
He kept repeating the message to drive it home to the audience.