Bhagavad Gita, Chapter 11, Verse 29

As moths precipitately rush into a blazing fire only to perish, even so do these creatures also precipitately rush into Your mouths only to perish.

A second, harsher image follows the first, moths rushing toward fire, no less real for being more painful to picture.

Where the river image reads as natural and inevitable, this one names something closer to a real, tragic mistake. Both comparisons point at the same outcome from two very different emotional angles.