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O Arjuna, bound by thy own Karma (action) born of thy own nature, that which from delusion thou wishest not to do, even that thou shalt do helplessly.

Bound by your own work, born of your nature, son of Kunti, what you do not wish to do out of delusion you will do even against your will.

The thought continues. Bound by his own work, which springs from his nature (svabhāva), Arjuna will end up doing, even against his will, what he now refuses out of delusion. The verse is realistic about human nature: people are shaped by tendencies they cannot simply wish away. Some read this as a statement of necessity, others as a warning that acting unwillingly is worse than acting with clarity. Either way, it urges Arjuna to choose freely what he will otherwise do under compulsion.