Not forgiving people has a lot of consequences to human being such as death. Death might comes because of the pains and heavy burden inside our heart, the death might also comes from someone who has offended us and it is common in most places. When we forgive people for their resentment against us, we declare peace, we do good to ourselves and the person we forgive, that brings about unity in the community, family and in a relationship. Best of luck dear.