Krishna says that the will of the ancestors, the hope, the ambition, the hatred, the vengeance, all of this would be the heritage of the coming generations. Parents want to give their children happiness of the whole world, but also give them the wealth of their sufferings also. Krishna says parents gave their children love, affection and better future but also at the same time gave their blind beliefs, wrong thoughts etc. Person's struggle with another individuals, societies with societies, nation's struggle with an another nation, do born from their teachings which are given to them by their parents and elders. While giving birth to their new one's they also open their way towards death. Along with the light of love, they also give darkness of hatred. And darkness may lead us to fear.