The Balance Sheet gives a snapshot overview of a company's financial condition at a given point in time. (This differs from the other financial statements in that it is the only one that reflects a single point in time; the other statements report on activities over a period of time.
In fact, with a 'beginning' balance sheet and the other statements, you have enough information to build an 'ending' balance sheet for any period of time.)
Remember, it is called a 'balance' sheet because the amount of assets should equal (or 'balance') the sum of the liabilities and owner's equity.