'Sadness' in the Bible

And I wrote this very thing to you, so that when I came I would not have sadness from those who ought to make me rejoice, since I am confident in you all that my joy would be yours.

But if anyone has caused sadness, he has not saddened me alone, but to some extent (not to exaggerate) he has saddened all of you as well.

For sadness as intended by God produces a repentance that leads to salvation, leaving no regret, but worldly sadness brings about death.

For see what this very thing, this sadness as God intended, has produced in you: what eagerness, what defense of yourselves, what indignation, what alarm, what longing, what deep concern, what punishment! In everything you have proved yourselves to be innocent in this matter.