Why: devouring all these worlds on every side with your blazing mouths, you lick them up, Vishnu, your fierce rays fill the entire universe with radiance, the description reaches its most intense, almost unbearable point before the chapter turns toward Arjuna's direct plea.

In life: an overwhelming experience often has a genuine peak of unbearable intensity right before some kind of turning point or relief arrives, that peak isn't the permanent state, it's the hardest point of a process that does eventually shift.

Teaching: if you're currently at what feels like the most unbearable peak of a difficult experience, trust that peaks like this tend to precede some kind of shift or turning point, rather than assuming the current intensity is now simply permanent.