Read Isaiah 51:12 Using Other Translations
I, even I, am he that comforteth you: who art thou, that thou shouldest be afraid of a man that shall die, and of the son of man which shall be made as grass;
"I, I am he who comforts you; who are you that you are afraid of man who dies, of the son of man who is made like grass,
“I, yes I, am the one who comforts you. So why are you afraid of mere humans, who wither like the grass and disappear?