All of the evidence dictates that the universe had a specific beginning and did not previously exist and is not eternal.
Because of this, we can only see a part of the universe and a recent paper (within the last three months) suggests that for all practical purposes we will only be able to see about 8% of the universe.
Watch the videos. The ONLY evidence there ever was for a big bang was a wrong interpretation of cosmic redshift as recession velocity and hence expansion, and Arp's findings just kill that.