(72) For this reason you could not point to any place in Scripture where one of the ancients approached a pregnant woman; later, after the child is born and weaned, you might find that marriage relations of husbands and wives were resumed. You will find that Moses' father kept this principle in mind. After Aaron's birth three years passed before Moses was born. Again, the tribe of Levi observed this law of nature given by God, although they were fewer in number than any others which came into the promised land. For a tribe does not easily grow to great numbers if their men have intercourse only within the legal marriage relationship and then wait until the end not only of pregnancy but also of breast-feeding.

(24) And from them arose seven pairs, male and female, and each was a brother and sister-wife; and from every one of them, in fifty years, children were born, and they themselves died in a hundred years.

(107) And after some days my son Methuselah took a wife for his son Lamech, and she became pregnant by him and bore a son.

Now, afterward she bore Cain, their son, and Cain cultivated the land. Thereupon he knew his wife. Again becoming pregnant, she bore Abel, and Abel was a herdsman of sheep. Cain brought in from the crops of his field, but Abel brought in an offering from among his lambs. God looked upon the votive offerings of Abel, but he did not accept the votive offerings of Cain. And fleshly Cain pursued Abel his brother. God said to Cain, “Where is Abel your brother?” He answered, saying, “Am I my brother’s keeper?” And Adam knew his partner Eve, and she became pregnant and bore Seth to Adam. And she said, “I have borne another man through god, in place of Abel.” Again Eve became pregnant, and she bore Norea. And she said, “He has produced for me a virgin as an assistance for many generations of human beings.” She is the virgin whom the forces did not defile. Then humankind began to multiply and improve.