in reply to what u just said
it doesn't matter when the law was given out
you no in your heart its wrong to kill
so Abram new to
ancient tradition's cannot justify sin
{Killing first born was an ancient tradition the Canaanites
and neighboring peoples used as a sacred right to appease the gods so that famine wouldn't strike the land}god destroyed the Canaanites for this and other evil practices
Abram is just as guilty as the Canaanites for being willing to this
Abram wasn't doing it to prevent a famine
so don't try to side track the issue
your bible claims he's was doing it because
your god commanded him to do it
making him break the law thou shall not kill
no perfect god would demand such an evil request
if your god wants the son dead let him kill him
YOU DON'T DO EVILit doesn't matter what other people or cultures think
the law is the law and thou shall not kill period.
even if it means disobeying your god
that includes using people as animal sacrifices to there gods
you need to quit trying to justify evil so you can hold on to your belief's
you are being evil in trying to defend these ingorant belief's
as some sort of truth