Oneself itself always is. What it means is that that which is; that which is you; is eternal, is deathless, is truth. It is this what is meant with 'I Am That I Am'; Oneself itself is as in One Undivided Self aka G-d. If it is too difficult to comprehend, you can use any intermediary such as Christ for Christ signifies Love but remember that it ultimately is all of you as one which is 'that which eternally is'. Have confidence and fear not, forgive all and see only Love. Love has always been, is, and always will be the first and only truth.
~ Wald