SB 7.5.47
aprameyanubhavo ’yam
akutascid-bhayo ’marah
nunam etad-virodhena
mrtyur me bhavita na va
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
I can see that this boy’s strength is unlimited, for he has not feared any of my punishments. He appears immortal. Therefore, because of my enmity toward him, I shall die. Or maybe this will not take place.