Suppose if you have got a friend, you always give him. Don't you expect something, "Oh, I give so many things to my friend. He does not offer me anything?" Don't you feel, out of love? Father, mother, they do so many things for the children. If the children do not do anything for the father and mother, are they not happy? Are they happy? No. They are unhappy: "My children is so ungrateful."
Although He does not want—Kṛṣṇa is full in Himself—but if we supply something to Kṛṣṇa . . . Kṛṣṇa's goods is to be supplied to Kṛṣṇa. The fruit is not produced by you. Kṛṣṇa says, patraṁ puṣpaṁ phalaṁ toyaṁ yo me bhaktyā prayacchati (BG 9.26):
"Anyone who offers Me a little fruit, a little water, and little leaf, oh, I accept." Tad aham aśnāmi, bhakty-upahṛtam: "Because he has brought with the devotional love, I accept it." If Kṛṣṇa accepts your offering, then your life becomes sublime. That is Kṛṣṇa consciousness.
Simply we should have to acknowledge. We are getting so many facilities from Kṛṣṇa. He is sitting in your heart, He is supplying you all necessities, He is giving you sunlight, He is giving you moonlight, He is giving you rainy . . . seasonal rains, fruits, flowers, grains, and you are so ungrateful that you do not acknowledge?
In your Christian Bible also it is said. You go to church, "O God, give us our daily bread." That's all right. Kṛṣṇa is supplying you bread. Otherwise wherefrom you are getting bread? You cannot manufacture bread in the factory, or wheat or rice. You can manufacture some iron tools, that's all, not eatable. But you cannot manufacture nice grains. That is not possible. It is supplied by Kṛṣṇa. Eko bahūnāṁ vidadhāti kāmān (Kaṭha Upaniṣad 2.2.13).