Greater authority than Krsna?

Expressions researched:
"greater authority" |"greater authority than Krishna" |"greater authority than Krsna" |"Nobody is greater authority than Me"

Bhagavad-gita As It Is

BG Chapters 7 - 12

The Lord therefore says to Arjuna, tac chṛṇu, or "Hear from Me." No one can be a greater authority than Kṛṣṇa, and therefore by hearing from Him one receives the greatest opportunity to become a perfectly Kṛṣṇa conscious person

BG 7.1, Purport: One should therefore begin yoga practice as directed in the last verse of the Sixth Chapter. Concentration of the mind upon Kṛṣṇa the Supreme is made possible by prescribed devotional service in nine different forms, of which śravaṇam is the first and most important. The Lord therefore says to Arjuna, tac chṛṇu, or "Hear from Me." No one can be a greater authority than Kṛṣṇa, and therefore by hearing from Him one receives the greatest opportunity to become a perfectly Kṛṣṇa conscious person. One has therefore to learn from Kṛṣṇa directly or from a pure devotee of Kṛṣṇa—and not from a nondevotee upstart, puffed up with academic education.