So, when God identifies "God-self" in Exodus 3 (in the Bible) to Moses, God purposes for Moses and all understanding individuals to relate in a meaningful way to God's identity and characteristics. Hence, "I AM" or "YAHWEH" (originally YHWH) prefigures God as personal, identifiable, relational, and contemporary to time.
moses was egyptian royalty, and well schooled. in many parts of the middle east, the philosophy went like this: a spirit's name designated it's function, and so by knowing and using a spirit's name you could CONTROL it. when moses asked god's name, he was seeking to control god.
yhwh, in actuality, is probably not god's actual name.