'Sorrow' in the Bible

For in much wisdom is much grief: and he that increaseth knowledge increaseth sorrow.

Then I saw that [even secular] wisdom [that brings sorrow] is better than [the pleasures of] folly and self-indulgence as light excels darkness.

Indeed, all of his days are filled with sorrow, and his struggles bring grief. In fact, his mind remains restless throughout the night. This is pointless, too!

A time for weeping and a time for laughing; a time for sorrow and a time for dancing;

All his days also he eateth in darkness, and he hath much sorrow and wrath with his sickness.

Sorrow is better than laughter: for by the sadness of the countenance the heart is made better.

For every purpose there is a time and a decision, because the sorrow of man is great in him.

Therefore remove sorrow from thy heart, and put away evil from thy flesh: for childhood and youth are vanity.