For centuries, thousands of sincere practitioners have accumulated definite evidence of the positive results of prayer. The serious doubt regarding prayer is not whether God can hear and respond, but whether the things people pray for are worthwhile. In the Bhagavad-gita, Lord Krishna declares that persons who come to Him asking for material (and therefore temporary) benefits are sukritina, or pious. They are certainly better than those who never approach the Supreme. Yet, such prayers are shortsighted and ask God to function as a supreme order supplier. The real purpose of prayer is not to gain material resources or even spiritual salvation for oneself. The power of prayer comes when we call to Krishna out of a desire to do His will. Such pure prayers are not means to the end but are themselves loving exchanges between the Lord and His pure devotees.