'Concerning' in the Bible

And I applied my heart to seek and to search out by wisdom concerning all that is done under heaven: it is a sore travail that God hath given to the sons of men to be exercised therewith.

Therefore I turned about to cause my heart to despair concerning all the labor wherein I had labored under the sun.

Say not thou, What is the cause that the former days were better than these? for thou dost not inquire wisely concerning this.