'Grief' in the Bible

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

So my mind was turned to grief for all the trouble I had taken and all my wisdom under the sun.

For all his days are sorrows, and his travail grief; yea, his heart taketh not rest in the night. This is also vanity.

Grief is better than laughter,for when a face is sad, a heart may be glad.