The question is if God  commanded me to kill my children, and i pray and confirm really is God that has commanded me to do that, i will obey him and carry out is commandment.The God i know will never visit any of His Children with Evil.If I may ask who gave the children to me, It is God, so why should i Disobey Him. Abraham obeyed God and God called Abraham not to lay his hands on the Lad. And He provided an alternative, What actually God want to see in us is our obedient to his words and commandments. Abraham and Isaac  did not commit sin, that led God to ask  Abraham to sacrifice his only son Isaac, also it was not the sin of Job that make God to allow all the children to perish at the time and date.