अयतिः श्रद्धयोपेतो योगाच्चलितमानसः।अप्राप्य योगसंसिद्धिं कां गतिं कृष्ण गच्छति॥
ayatiḥ śraddhayopeto yogāc calita-mānasaḥaprāpya yoga-sansiddhiṃ kāṅ gatiṃ kṛṣṇa gacchati
Word by word
The verse says
Arjuna said: One who has trust but does not strive, whose mind wanders from the practice — failing to reach completion in it, what road does he go, Krishna?
In plain words
Arjuna asks the question everyone eventually asks.
Not about the person who never tried. About the one who tried and drifted.
He has faith. He did not get there. What happens to him?
Where you've felt this · in parenting
Your son works hard at the thing for two years and then drifts away from it. You cannot tell whether those two years counted for anything at all. You would very much like to know.
Going deeper
This is the most personal question Arjuna asks in the whole book, and it is worth asking who he is asking it for.
He has just been told that the mind is held by practice and dispassion over a long time. He is a man on a battlefield who has already broken down once. The arithmetic of a very long time is not reassuring to him.
So the question is not academic. It is: what if I am not going to be one of the ones who finishes?
Notice too that the person he describes has śraddhā — trust. That is the first condition the Gita keeps naming. So this is not about a sceptic or a hypocrite. It is about someone who believed it and could not sustain it.
Which is the ordinary case, and the fact that the Gita stops the whole chapter to answer it says something about what kind of book it is trying to be.