[20] Therefore I went about my heart to despair of all the labour which I took under the sun. [21] For there is a man whose labour is in wisdom, and in knowledge, and in equity; yet to a man that hath not laboured therein shall he leave it for his portion. This also is vanity and a great evil. [22] For what hath man of all his labour, and of the vexation of his heart, wherein he hath laboured under the sun? [23] For all his days are sorrows, and his travail grief; yea, his heart taketh not rest in the night. This is also vanity.