Who understands that the soul can never be killed?

The 19th verse of chapter 2 of Bhagavad Gita for happiness continues with Krishna telling Arjun that the soul cannot be killed. Krishna states that the soul cannot be killed and cannot kill. When an embodied entity is hurt, the soul is not killed. The soul is so strong and eternal that no form of worldly weapons can destroy it. Krishna is against violence and cruelty of animals. But this is a battle of Dharma.