You know, those who are Christian, you pray in the church, "O Father." So God is actually the father. In the Bhagavad-gītā it is also it is said: "Father." Ahaṁ bīja-pradaḥ pitā (BG 14.4). Pitā means father. Ahaṁ bīja-pradaḥ pitā. So actually, God supplies everything through the material agent. That's all. Just as God supplies . . . the father supplies the money in the hands of the mother and mother expends for the children, similarly, God is the supreme father of the whole living entities, and the material nature is the agent of the Supreme Lord, and she produces food for you.
You may have tractor, you may have very good arrangement for producing food, machinery; but still, if the land or earth does not produce food, your this tractor or all other arrangements will be failure. So after all, we should know the supply of things are in the hands of the material nature. And material nature works under the direction of God. That is stated in Bhagavad-gītā: mayādhyakṣeṇa prakṛtiḥ sūyate sa-carācaram (BG 9.10). Prakṛti means this material nature.
You don't think material nature is blind. Material nature has got her intelligence, and she is taking intelligence from the Supreme Lord. And according to that, she is supplying food or grains and everything. Because you get everything from the earth. Either you take metal or this wood or water or food grains, whatever you are taking, using, you are exploiting the resources of material nature, but material nature is the agent of God. Material nature is an energy of God. So if God does not wish to supply you, however you may bring tractor and anything . . . just like in desert. In desert you cannot make it fertile because there that particular tract of land is forbidden by God: "No, nothing should be produced." You cannot do it. If you have got producing power, then why don't you produce sufficient grains and vegetables in the desert? That is not possible.