"R. Abbahu said: 'If a man says to you: 'I am God'--he is a liar; (if he says) 'I am the son of man'--in the end people will laugh at him; (if he says) 'I will go up to heaven'--he says, but shall not perform'. (y. Taan. 2:65b)" [as quoted from The Separation of Early Christianity from Judaism by Dacy]
Compare that with what Yeshua said in John 8:
John 8:58-59 "58 “Very truly I tell you,” Jesus answered, “before Abraham was born, I am!” 59 At this, they picked up stones to stone him, but Jesus hid himself, slipping away from the temple grounds."