In consonience with rational thought and scientific thought how do you explain the scientific evidence for an expanding universe, the radioation echo, and the second law of thermodynamics? One of the laws of rationality is that all events or occurrances or things had a cause. Do you believe the universe is eternal and without cause?
Hawking has given a cogent mathematical description of a universe without a beginning in time.
The word "eternal" makes hidden assumptions about the nature of time that are not relevant in a system lacking change.
Your question is in the same class of discussion as the assertion that gravity is the pressure we feel on our butts when we sit down. You assume that because you feel or see the passage of time, that your feeling about the nature of time is sufficient knowledge from which to draw conclusions about the birth and fate of existence. A rather arrogant assumption, in my humble opinion.