Unable to understand (BG and SB)
Expressions researched:
"never be able to understand"
|"not able to be understood"
|"not able to understand"
|"unable to understand"
Bhagavad-gita As It Is
BG Chapters 7 - 12
"My dear Lord, devotees like Vyāsadeva and Nārada know You to be the Personality of Godhead. By understanding different Vedic literatures, one can come to know Your characteristics, Your form and Your activities, and one can thus understand that You are the Supreme Personality of Godhead. But those who are in the modes of passion and ignorance, the demons, the nondevotees, cannot understand You. They are unable to understand You. However expert such nondevotees may be in discussing Vedānta and the Upaniṣads and other Vedic literatures, it is not possible for them to understand the Personality of Godhead." (Stotra-ratna 12)