How do I answer someone who argues that the phrase: "I am the way, the truth, & the life...." (John 14:6) is true for all prophets not just Jesus?

John 14:6: Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me..” **A Jewish professor that I know argues that this statement is true for all prophets concerning the people they were sent to. That a critical misunderstanding has led Christians to imagine the statement is only true for Jesus. He asserts that Noah was the way, the truth, and the life for his people. Those who didn't believe in him perished in the flood.** In the same way, he says Moses was the way, the truth, and the life for the Israelites when he was their leader/prophet (he cites the passover and says any family that refused to obey Moses would have lost a firstborn). According to him, Jesus cannot be *the way*, *the truth*, and *the life* for the people of Noah and Moses when those people were not obligated to believe in him. He cites Hebrews 1:1: "In the past God spoke to our forefathers through the prophets at many times and in various ways" He also cites Jeremiah 21:8; Malachi 2:6-7; Malachi 2:8-9; Proverbs 12:28; Proverbs 19:23; and Proverbs 11:19 as evidence that those who followed the prophets were righteous, and the right way of life. How do I rebut this, with references and wisdom?