But, aren't the Vengeful Lord and Jesus the same?

Exodus 3:14

"And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you."

John 8:56-59

"56 Your father Abraham rejoiced to see my day: and he saw it, and was glad.

57 Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham?

58 Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am."

Not, "I was". It is clear the Jews recognized his claim to divinity because,

"59 Then took they up stones to cast at him: but Jesus hid himself, and went out of the temple, going through the midst of them, and so passed by."