Bhagavad Gita 18.64

सर्वगुह्यतमं भूयः शृणु मे परमं वाचः |
इष्टोऽसि मे द्रधमिति ततो वक्ष्यामि ते हितम्

Translation

Hear again My supreme instruction, the most confidential of all knowledge. I am revealing this for your benefit because you are very dear to Me.