LET THERE BE LIGHT
When God said, "Let there be LIGHT". There was LIGHT! And that LIGHT is still EXPANDING.
Kolb and Turner wrote, "Since the UNIVERSE has a finite age, and LIGHT travels at a finite speed, there may be events in the past whose LIGHT has not had time to reach us."
There were EVENTS HAPPENED for millions of years until the LIGHT had reached us. Angels have already existed for millions of years. Remember, God our CREATOR existed before the Universe existed.