John 8:24-28

That is why I said that you will die in your sins; for unless you believe that I AM who I claim to be, you will die in your sins.” “Who are you?” they demanded. Jesus replied, “The one I have always claimed to be. I have much to say about you and much to condemn, but I won’t. For I say only what I have heard from the one who sent me, and he is completely truthful.” But they still didn’t understand that he was talking about his Father. So Jesus said, “When you have lifted up the Son of Man on the cross, then you will understand that I AM he. I do nothing on my own but say only what the Father taught me.