Hey - It all needs to start somewhere, right ? But you still have no basis for any moral foundation without an ultimate authority, otherwise we will just end up at Hitlers Germany.

You ask a valid and good question, Biblically speaking there are no good or moral people as we are all born under a curse due to the Sin and federal headship of Adam (and Eve). The Jews needed to participate in temple sacrifices to atone for sins, Christ then came to pay for the sins of those that would believe under the new covenant in order that some could be made right with God. To anticipate the question, yes, sacrificing ones son seems and probably is "barbaric", but it was done willingly by both parties so that many could be spared eternal punishment. That is what demonstrates the love of God, even for Ms. Parent (should she repent).