Bhagavad Gita Chapter 10.14
sarvam etad ṛtaḿ manye
yan māḿ vadasi keśava
na hi te bhagavan vyaktiḿ
vidur devā na dānavāḥ
Translation
O Krishna, I totally accept as truth all that You have told me. Neither the demigods nor the demons, O Lord, can understand Your personality.