to be exercised # 21_ECC_01_13 # 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. 
to be exercised # 21_ECC_03_10 # I have seen the travail, which God hath given to the sons of men to be exercised in it.