Krishna gives the ultimate instruction in the Bhagavad-Gita: think of Krishna always, worship and offer respects to him as your supreme lord. Surrender completely to Krishna and he will deliver you from all sins and reactions. Arjuna agrees to follow Krishna's instruction, committing to do whatever Krishna says.

1. STANDARD
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CHAPTER 18
THE ULTIMATE INSTRUCTION
If you listen to Krishna, victory is yours
If you don’t listen, you will be lost
You decide. The ball is in your court
Lesson-05
WHAT IS THE ULTIMATE INSTRUCTION OF BHAGAVAD-
GITA?
Krishna mercifully gives the ultimate supreme instruction
which is the most secret knowledge of all: “Always think
of Me, become My devotee, worship Me and offer your
respects unto Me. Thus you will come to Me without fail.
I promise you this because you are My very dear friend.”
Then Krishna says: “Abandonall varieties of religion and
just surrender unto Me. I shall deliver you from all sinful
reactions. Do not fear.”
This is the ultimate instruction of Gita. Krishna then
proclaims that anyonewho teaches this knowledge of
Bhagavad-gita is very dear to Him. There is no one more

2. dear to Him than he who explains this supreme secret of
Bhagavad-Gita.
To this, Arjuna replies: KarishyeVacanam Tava: “I will
do what You say, Krishna.”