Interesting your reference to Molech.
I've often made reference to the passages in Jeremiah where the nation of Israel was chastised for offering up their children as burnt offerings to Ba'al or Molech - the passages where Jehovah says that it was "a thing that I did not command and that did not come up into my heart."
"And you must say, 'Hear the word of Jehovah, O you kings of Judah and you inhabitants of Jerusalem. This is what Jehovah of armies, the God of Israel, has said: "Here I am bringing a calamity upon this place, of which when anyone hears, his ears will tingle; for the reason that they have left me and have proceeded to make sacrificial smoke in it to other gods whom they had not known, they and their forefathers and the kings of Judah; and they have filled this place with the blood of the innocent ones. And they built the high places of the Ba'al in order to burn their sons in the fire as whole burnt offerings to the Ba'al, something that I had not commanded or spoken of, and that had not come up into my heart."'" - Jeremiah 19:3-5.
"And you must say, 'Hear the word of Jehovah, O you kings of Judah and you inhabitants of Jerusalem. This is what Jehovah of armies, the God of Israel, has said: "Here I am bringing a calamity upon this place, of which when anyone hears, his ears will tingle; for the reason that they have left me and have proceeded to make sacrificial smoke in it to other gods whom they had not known, they and their forefathers and the kings of Judah; and they have filled this place with the blood of the innocent ones. And they built the high places of the Ba'al in order to burn their sons in the fire as whole burnt offerings to the Ba'al, something that I had not commanded or spoken of, and that had not come up into my heart."'" - Jeremiah 19:3-5.
If human sacrifice was something abhorrent to god back then (well, maybe it wasn't, considering Jephthah's daughter...) how can it be acceptable now?