Just you have got a very nice example. Just like Jesus Christ, Lord Christ. So what was his fault? But the sura-dviṣām, the envious persons killed him. And if we find, if we analyze, what is the fault of Jesus Christ, there is no fault. The only fault he was preaching about God. And still he'd find so many enemies. He was cruelly crucified. So you'll always find this, sura-dviṣām. So Kṛṣṇa comes to kill these sura-dviṣām. Therefore vadhāya ca sura-dviṣām. These envious persons are killed.
But this killing business can be done without the presence of Kṛṣṇa. Because there are so many natural forces, war, pestilence, famine. Anything. Just set on working. Millions of people can be killed. So Kṛṣṇa does not require to come here to kill these rascals. They can be killed simply by Kṛṣṇa's direction, nature's law. Prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ (BG 3.27). Sṛṣṭi-sthiti-pralaya-sādhana-śaktir ekā (Bs. 5.44). The nature has got so much power that it can create, it can maintain, it can annihilate, dissolute, everything. Nature is so powerful.