A perfectly valid legit question.
Please no attempts to derail the thread with nonsense like "God would never say that" or "God would never change the rules with murder" etc....
If God commanded me to kill my own children, I will do nothing but follow His command. If you read in the Bible, God tested Abraham to kill his own son Isaac as an offering to God. Which means he need to kill His son as an offering but when God saw He is willing to kill his son God stop him to kill his own son. Meaning, we are no different with Abraham in terms of obeying God's word.
I was thinking the exact same story from the bible. I just hope that god does indeed stop me from killing my children because if he told me to I would do that.
What if he don't and your child remained dead? And, are you really sure it's God? I had a high school classmate that told me she was hearing a voice telling her to kill her family. I lost contact with her when she stopped going to school. I sure hope she and her family are still fine.
This is called a mental disorder when you hear such bad voices, such people are sent to the hospital for the mentally ill.
Unfortunately, people in the past that would have been labelled as mentally ill were revered or feared because they don't understand what those conditions are. Some point to Muhammad's "revelation" as some sort of episode. (Some fundamentalist Christians would argue it was demonic possession though, because of the symptoms shown.)
People keep on saying we no longer get prophets. Quite the contrary, there's plenty of them - in asylums.