न तु मां शक्यसे द्रष्टुमनेनैव स्वचक्षुषा।दिव्यं ददामि ते चक्षुः पश्य मे योगमैश्वरम्॥
na tu māṃ śakyase draṣṭum anenaiva sva-cakṣuṣādivyaṃ dadāmi te cakṣuḥ paśya me yogam aiśwaram
Word by word
The verse says
But you will not be able to see me with these eyes of yours. I give you a divine eye. Now look at my power of joining.
In plain words
The equipment has to be changed first.
Not his willingness, not Arjuna's worthiness. His eyes.
Divyaṃ dadāmi te cakṣuḥ — I give you a divine eye. It is a gift, and it is given without being asked for.
Where you've felt this · in health
You are shown a slide under a microscope and told there is a whole population living in it. Looking harder at the glass with your own eyes will never get you there, however sincere you are about it. Somebody has to hand you the instrument, and then the thing that was always on the slide is simply there.
Going deeper
Changing the instrument rather than the effort is the move here, and it reframes the whole question of spiritual experience.
Arjuna is not told to concentrate, purify himself or try harder. He is told that his equipment cannot do this, and then given different equipment. Nothing about his sincerity was in question and nothing about it would have helped.
That matches what Chapter 7 said about not being manifest to everyone, and why — not because of hiding, but because of what ordinary seeing is built to do.
For a reader this removes a particular kind of self-blame. If you have never had an experience of the sort described in this chapter, the text does not conclude that you lacked faith or effort. It says the organ required is not one anybody has as standard, and that it is given rather than achieved.