you know what, abraham was a bit of an asshole. he kept going to these towns telling the kings that his wife sarah was his sister (well she kinda was)
because she was beautiful and he was afraid that they would kill him to get to her (did i mention she was old as dirt) and then when the kings would try to kick it god would put a curse on them
. then with sarah's insistence he has this kid with the help (did i mention he and his sarah were pushing their centennial) but of course sarah get jealous so god promises her her own bambino. through divine intervention she has a son and doesnt want baby number one to get the inheritance (did i mention abraham was filthy rich) so she tells him to get rid of that kid and its momma. why did this fool send this woman out in the desert with a baby on her back and bottle of water talking about make tracks.