Therefore, I said to you, that you will die in your sins. For if you will not believe that I am, you will die in your sin.
Other versions
King James Version
I said therefore unto you, that ye shall die in your sins: for if ye believe not that I am he, ye shall die in your sins.English Standard Version
I told you that you would die in your sins, for unless you believe that I am he you will die in your sins."New International Version
I told you that you would die in your sins; if you do not believe that I am the one I claim to be, you will indeed die in your sins."