By His Grace Chaitanya Charan Das
People often ask, “If God, the creator of world, is good, why does evil exist in the world?”
Evil arises not from Krishna’s omnipotence but from the soul’s independence.
Though Krishna is omnipotent, he still gives all souls free will so that they can choose to love him and therein relish existence’s supreme fulfillment. After all, only free individuals can choose to love. But the souls can abuse their independence by choosing to not love Krishna but to enjoy matter instead. ….
http://www.gitadaily.com/2014/09/17/krishna-doesnt-ordain-evil-he-just-sanctions-it/