Since Adam and Eve were the first (and only) human beings, their children would have no other choice than to intermarry. God did not forbid inter-family marriage until much later when there were enough people to make intermarriage unnecessary (Leviticus 18:6-18).
Kwa kuwa Adamu na Hawa walikuwa wanadamu wa kwanza duniani, watoto wao hawakuwa na lengine ila kuoana. Mungu hakukataza kuoana kwa jinsi hii mapema mpaka dunia ilipokuwa na watu wakutisha ndipo akakataza aina hii ya kuoana (mambo ya walawi 18:6-18).