Consequently He is the controller, friend and maintainer of all living entities. We should live by the mercy of God and take only those things which are allotted to us according to our particular living condition. In this way, by not encroaching on another's property, one can enjoy life.
In other words, the purport of the Upaniṣads, Vedānta-sūtra and Śrīmad-Bhāgavatam is one and the same. If one studies Śrīmad-Bhāgavatam carefully, he will find that all the Upaniṣads and the Vedānta-sūtra are nicely explained therein. Śrīmad-Bhāgavatam teaches us three subjects: how to reestablish our eternal relationship with the Supreme Lord, how to act in that relationship, and, lastly, how to achieve the highest benefit from it.
The four Śrīmad-Bhāgavatam verses beginning with aham evāsam evāgre (2.9.33–36) are the gist of the whole Bhāgavatam. These are nicely summarized by Lord Caitanya as follows: "I (Kṛṣṇa) am the supreme center for the relationships of all living entities, and knowledge of Me is the supreme knowledge. The process by which a living entity can attain Me is called abhidheya. By it, one can attain the highest perfection of life, love of Godhead. When one attains love of Godhead, his life becomes perfect." The explanation of these four verses is given in Śrīmad-Bhāgavatam, and Lord Caitanya gave a short description of the principles of these verses. He said that by mental speculation or academic education no one can understand the constitutional position of the Supreme Lord—how He is situated, His transcendental qualities, His transcendental activities and His six opulences. These can be understood only by the mercy of the Lord. As stated in the Bhagavad-gītā, one who is fortunate enough to receive the Lord's favor can understand all these explanations by the mercy of the Lord.