Our self-love keeps us from surrendering to the guidance of the will of God, and eliminates the sense of gratitude we should have toward God for all the blessings God lavishes upon us. By calling upon us to deny ourselves, bear our cross and hope for eternal life, even as we thank God for the blessings of this life, we are to abandon once for all the image of ourselves we have created through our blind self-love, in order to be conformed to the image of selfless and self-giving love that is revealed in Jesus Christ.
Let’s suppose that at some point in the future the Big Bang Theory is deemed wrong. Would that mean that the universe is eternal? No, for a number of reasons.