exactly , the claim that god is eternal and existed since the beginning is as weak as the claim that we existed since the beginning
if god doesn't need a creator and god came from nothing , why didn't/can't we come from nothing ?
why didn't existence began 4.5-4.7 billion years ago
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the universe come to existence without a creator
and god came to existence without creator is the same claim .
Pantheism and Theism are extremely similar with the simple difference of one claims that reality and the universe is god while the other claims that god exist outside reality .
both claims of the universe keeping it's own laws since they came to existence along with it's laws , since the universe is god , and god needs no creator
while the other claims that god created the universe and god needs no creator
you can see that both are very similar