American Standard Version
I, even I, am he that comforteth you: who art thou, that thou art afraid of man that shall die, and of the son of man that shall be made as grass;

Berean Study Bible
“I, even I, am He who comforts you. Why should you be afraid of mortal man, of a son of man who withers like grass?

Douay-Rheims Bible
I, I myself will comfort you: who art thou, that thou shouldst be afraid of a mortal man, and of the son of man, who shall wither away like grass?

English Revised Version
I, even I, am he that comforteth you: who art thou, that thou art afraid of man that shall die, and of the son of man which shall be made as grass;

King James Bible
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;

World English Bible
"I, even I, am he who comforts you: who are you, that you are afraid of man who shall die, and of the son of man who shall be made as grass;

Young's Literal Translation
I -- I am He -- your comforter, Who art thou -- and thou art afraid of man? he dieth! And of the son of man -- grass he is made!

Isaiah 51:12 Additional Translations ...