Parallel Verses
King James Version
Unto the woman he said, I will greatly multiply thy sorrow and thy conception; in sorrow thou shalt bring forth children; and thy desire shall be to thy husband, and he shall rule over thee.
Darby Bible Translation
To the woman he said, I will greatly increase thy travail and thy pregnancy; with pain thou shalt bear children; and to thy husband shall be thy desire, and he shall rule over thee.
World English Bible
To the woman he said, "I will greatly multiply your pain in childbirth. In pain you will bring forth children. Your desire will be for your husband, and he will rule over you."
Young's Literal Translation
Unto the woman He said, 'Multiplying I multiply thy sorrow and thy conception, in sorrow dost thou bear children, and toward thy husband is thy desire, and he doth rule over thee.'
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How do you increase something that couldn't happen? All I see here is that CONCEPTION was also increased...... so maybe, at first, they were only set up to have a child every few years?