Why: remembering this wondrous and holy dialogue between Krishna and Arjuna again and again, Sanjaya rejoices repeatedly, describing ongoing, renewed joy from returning to this teaching, not a single, one-time benefit already exhausted.

In life: some of the most valuable things you've learned or witnessed continue to offer renewed benefit each time you actually return to and reflect on them again, rather than being fully used up after a single encounter.

Teaching: identify something significant you've learned or witnessed that continues to offer renewed benefit each time you return to it, and make a habit of actually returning to it periodically, rather than treating a single past encounter as having exhausted its full value.