And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.

I made me pools of water, to water therewith the wood that bringeth forth trees:

I have seen the travail which God hath given to the sons of men to be exercised therewith.

Whoso removeth stones shall be hurt therewith; and he that cleaveth wood shall be endangered thereby.