勉強
18 And born to Enoch is Irad; and Irad hath begotten Mehujael; and Mehujael hath begotten Methusael; and Methusael hath begotten Lamech.
4 And I have seen all the labour, and all the benefit of the work, because for it a man is the envy of his neighbour. Even this [is] vanity and vexation of spirit.