Vyasa dev is called Vyas (expander) because he expanded the glories of Krishna katha.
Narad muni, who gives Narayana to everyone, is guru of whole world.
On the request of Uddhava, Lord Krishna promised to stay in this world in form of Srimad Bhagvatam.
Krishna katha is life of the soul.
Bhagavad katha is not for the ears, but for the Soul and Supersoul who reside in the heart.
When the baby cries desperately then at that time the mother leaves everything and solely attends to the baby. Similarly we should cry for the Lord, Krsna! Krsna! Krsna! and hopefully He will come.