Martin Luther's Rebuke of the Jews

John 10:
24Then came the Jews round about him, and said unto him, How long dost thou make us to doubt? If thou be the Christ, tell us plainly. 25Jesus answered them, I told you, and ye believed not: the works that I do in my Father's name, they bear witness of me. 26But ye believe not, because ye are not of my sheep, as I said unto you.