Your friend the great sage Kṛṣṇa-dvaipāyana Vyāsa has already described the transcendental qualities of the Lord in his great work the Mahābhārata. But the whole idea is to draw the attention of the mass of people to kṛṣṇa-kathā [Bhagavad-gītā] through their strong affinity for hearing mundane topics.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मुनिर्विवक्षुर्भगवद्गुणानां सखापि ते भारतमाह कृष्णः । यस्मिन्नृणां ग्राम्यसुखानुवादै- र्मतिर्गृहीता नु हरेः कथायाम्
munirvivakṣurbhagavadguṇānāṃ sakhāpi te bhāratamāha kṛṣṇaḥ | yasminnṛṇāṃ grāmyasukhānuvādai- rmatirgṛhītā nu hareḥ kathāyām
SB 3.5.12