Is-I am - Parmenides or Moses (The verb to be in Western philosophical thought)

Is-I am (Greek: esti-eimi) constitute a pair of words which at the present time should encourage us to think, whether we are philosophers or theologia ns. We are dealing with the verb "to be" in both cases, with the importance attached to this vocabulary, and finally with the history of Western thoug ht. In both cases we are dealing with the verb "to be" in the present indic ative. The only difference is one of person: the third person in Parmenides ' poem and the first person in the oracular statement in Exodus 3,14. What is the meaning of the difference and what does it suggest?