In the New Testament, in John 8:58-59, the Jews tried to stone Jesus because he claimed to be "I AM", an obvious attempt at calling himself God, which is blasphemy to any Jew.
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I'm pretty sure humankind used just this phrase or something close to it prior to biblical times. After all, at its most basic, it is a declaration of our existence and our identity, not necessarily with any religious connotation. BTW, there is a really good documentary called "I AM" that I highly recommend.