Why Did God Kill Innocent Children in the Old Testament?

Few subjects confuse more people about God and the Bible than why he ordered the killing of children and other innocent people in the Old Testament. God seems to be a mean bully in the Old Testament and Jesus meek and mild in the New Testament. Does a person need to reject one to embrace another? Is there any rational reason, whatsoever, that God would have order such brutality? This talk will address this very difficult subject with an invitation to not let something that doesn’t make sense, cause you to lose heart.