GINOLJC, to all
In the OP, the sons born to the Adams. (the man and the woman), produce children, without or little or no pain. and another evidence of this is in Genesis 4:13 "And Cain said unto the LORD, My punishment is greater than I can bear." Genesis 4:14 "Behold, thou hast driven me out this day from the face of the earth; and from thy face shall I be hid; and I shall be a fugitive and a vagabond in the earth; and it shall come to pass, that every one that findeth me shall slay me." Genesis 4:15 "And the LORD said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And the LORD set a mark upon Cain, lest any finding him should kill him."
Question, "Who are these ... other .....people, that might kill Cain .... finding him might slay him, because of what he did to his brother Able?".
and remember Adam and Eve with their two boys, (now only one), were the only one's on the eaerth? no way, and Adam and Eve are the first, and everyone came from them. so these other people must be accounted for.
101G.