Every religous book teaches humanity respect each other thats why 85% people follow their religions,,,,,,,,,, One of the reasons why Prophets and Messengers were sent was to tell people about the Hereafter, because if man does not believe in Allaah and the Last Day, he will be a slave to his desires, running after material things and following the ways of misguidance. If he is reminded or advised, he will deny that he is answerable for his deeds.