Barbara Baker, a wealthy widow, promises the pastor of her church that she will donate $$10,000$ to the church to help pay off its mortgage, if the stewardship committee can obtain enough pledges and allocate enough funds for the balance of the $$30,000$ mortgage. Relying on Barbara's promise, the church finds other pledges to pay off some of the mortgage, and the church cancels a Christmas concert to save funds to come up with the $$30,000$ needed. Now, however, Barbara has changed her mind and plans to take an around$-$the$-$world cruise instead.