A Balance Sheet is: 

A statement, at a single point in time, of all the ledger balances in the business' accounts. 

A statement, at a single point in time, of a business' assets, liabilities, and equity. 

A statement, covering a period of time, showing the changes to the owners' investment in the business. 

A statement, at a single point in time, of the actual cash received and/or paid to date.