Srimad-Bhagavatam: Canto 1 - Chapter 1 - Verse 9
उपवर्णितमेतद्व: पुण्यं पारीक्षितं मया ।वासुदेवकथोपेतमाख्यानंयदपृच्छत ॥ ९ ॥
upavarṇitam etad vaḥpuṇyaṁ pārīkṣitaṁ mayāvāsudeva-kathopetamākhyānaṁ yad apṛcchata
O sages, as you did ask me, now I have described almost everything regarding the narrations about Lord Kṛṣṇa in connection with the history of the pious Mahārāja Parīkṣit.
Śrīmad-Bhāgavatam is the history of the activities of the Lord. And the activities of the Lord are performed in relation with the devotees of the Lord. Therefore, the history of the devotees is not different from the history of Lord Kṛṣṇa’s activities. A devotee of the Lord regards both the activities of the Lord and those of His pure devotees on an equal level, for they are all transcendental.