The Sixth Commandment is "Thou shalt not kill". This commandment refers to unlawful killing, which is also known as murder. The commandment is about respect for life and the sanctity of human life, which is underlined by the story of Cain and Abel. The commandment is not limited to murder, but it is about the purity of heart and deep respect for the life of other human beings. Jesus Christ emphasized the spiritual intent of the commandment and spoke about right attitudes towards others, even against verbal abuse. The commandment deals with inward realities as well, such as those inner attitudes that, if left unchecked, will result in murder.