John Gills Exposition of the Bible Commentary - Genesis 4:18
And unto Enoch was born Irad ,.... But of neither of them is any other mention made, either in sacred or profane history; nor is it said how old Enoch was when Irad was born, nor how long he lived after; as is recorded of Adam, Seth, and their posterity: and Irad begat Mehujael, and Mehujael begat Methusael ; of whom also we have no other account: and Methusael begat Lamech ; and it seems for the sake of Lamech that the genealogy of Cain's posterity is described and carried... read more
John Gills Exposition of the Bible Commentary - Genesis 4:17
And Cain knew his wife ,.... Who this woman was is not certain, nor whether it was his first wife or not; whether his sister, or one that descended from Adam by another of his sons, since this was about the one hundred and thirtieth year of the creation. At first indeed Cain could marry no other than his sister; but whether he married Abel's twin sister, or his own twin sister, is disputed; the Jews say F7 Pirke Eliezer, c. 21. , that Cain's twin sister was not a beautiful woman, and... read more