Then they said to Him, "Who are You?" And Jesus said to them, "Just what I have been saying to you from the beginning.
John 8:25
Surrounding context
8:24 Therefore I said to you that you will die in your sins; for if you do not believe that I am He, you will die in your sins."
8:25 Then they said to Him, "Who are You?" And Jesus said to them, "Just what I have been saying to you from the beginning.
8:26 I have many things to say and to judge concerning you, but He who sent Me is true; and I speak to the world those things which I heard from Him."