rest assured

I rest my case

The previous statement or proclamation encapsulates my view.

lay to rest

To bury someone who has died.

rest easy

To cease worrying about something; to not be concerned or troubled by worries.

rest his soul

Used parenthetically to mark the referent as being deceased

rest on one's laurels

To rely on a past success instead of trying to improve oneself further.

rest one's soul

To wish that a person might find peace in the afterlife.

the rest is history

One does not need to continue narrating a story as the subsequent events are assumed to be well-known.