I AM - Yahweh

So he said to them again, “I am going away, and you will seek me, and you will die in your sin. Where I am going, you cannot come.” (John 8:21)

I told you that you would die in your sins, for unless you believe that I am he you will die in your sins.” (John 8:24)

So Jesus said to them, “When you have lifted up the Son of Man, then you will know that I am he, and that I do nothing on my own authority, but speak just as the Father taught me. (John 8:28)

In these verses, Jesus says "I am" in each one. However there is a big difference between verse 21 as he only uses the Greek word ego to identify himself personally. But in the other two verses he uses ego eimi. This is a repetition of “I” in Greek. The word “he” isn’t in the Greek. In verse 24 he says we need to believe that he is I AM. This is the very name of God in the Old Testament from Exodus 3:14 and 15. Jesus is essentially saying his name is Yahweh. We have this translated or written out in our Bibles as Lord. In verse 28 we are to know Jesus as I AM. We can't just believe without knowing and we can't only know without believing. Jesus is God. Believing without knowledge is just emotional and can’t save because it isn’t based on fact. Knowing without believing is sterile facts and knowing facts doesn’t save. That is why we must seek the Lord with our whole heart, mind, and soul if we really want to be saved.  “And he said to him, ‘You shall love the Lord your God with all your heart and with all your soul and with all your mind.’” (Matt 22:37).