Exodus Part Two: Population of the Exodus Group.

Some comments:The initial list of 70 is given in Genesis 46. It excludes wives but includes a few daughters. Some of those listed are likely to be too young to be married (e.g. the sons of Perez). Others might have several wives. But it should be noted that a few, and only a few, of the grandchildren of Jacob - and not the oldest - are listed as having children themselves, suggesting that there had been a high infant mortality rate, and maybe some of the wives, too had died.All things considered the figure of 140 is probably not too far off. Certainly it should be more than 70.Using the figure of 140, to get to a population of 2,000,000 in 430 years requires that the population double about every 31 years (31 years & 2 months is a closer approximation). I do not believe that this can be considered remotely plausible except under very favourable conditions, unlikely to be found for an extended period of time anywhere in the Ancient world.

You should count Dinah and Serah instead of Er and Onan - having already died some time before (I would guess 20 years or more) they can't really be included in the group going to Egypt. The daughters are presumably mostly married off - but 2 out of 70 still seems on the low side to me, especially if we assume that some of those counted are not yet adult. However, the shortage - and distribution - of great-grandchildren seems to be more serious to me.The 2.47% figure seems about right. It gives a doubling time of 28.4 years - explained by the lower start figure and higher end figure.