It means that whatever it is will solve itself.
The idiom "work itself out" means that a situation will resolve or improve on its own without requiring direct intervention or action. It suggests a belief in the natural course of events to lead to a positive outcome.
"Come to yourself" means to regain consciousness. This is a metaphor, not an idiom - it's comparing the church to a person who has been unconscious.
"To be" is not an idiom - it's a verb.
It's not an idiom because you can figure out the meaning if you think - if you're running around in circles, you're not getting anywhere. It's a metaphor for fruitless work.
Pest is not an idiom. It's a word.
When something is on the fritz, it means it's broken, or doesn, work anymore, out of commission.
The idiom "apple shiner" means the teacher's pet.
The meaning of the idiom in the pink of health means being in good health.
exhausted, imagine beating something rough until it has softened. It expresses the similarity.
The idiom means impress someone is egg on
It's not an idiom - to cope means to deal with, or to handle
"Old hand" is an idiom meaning having lots of experience.
It is not an idiom. It is an expression. The difference is that an idiom's meaning cannot be derived from the meaning of its individual words. In the expression wolfing down food, the meaning is clearly derived from the meaning of the words, and people have been saying it for hundreds of years.