Filing bankruptcy stops creditors' collections against you immediately. But sometimes a creditor tries to get permission to collect anyway.
Do you owe income taxes for the 2018 tax year AND already owe for one or more tax years? Chapter 13 may be an especially good tool for you.
The automatic stay immediately stops most collection actions when you file bankruptcy. But it doesn't stop a "criminal action or proceeding."
To be able to keep your property that's collateral or security on a secured debt, you must give that secured creditor "adequate protection."
A creditor might file a motion to avoid violating the stay, or to get permission to take some action other than collect a debt.
A creditor might want to pay a claim through your insurance, or finish a lawsuit to establish that you got the debt through fraud.