Buuuuuuut, hypothetically, isn't it at least possible that God COULD have used the Big Bang as His method of creation? The massive ball of energy and mass had to come from somewhere, so, hypothetically, what if He created it and then set the process into motion? Yes I'm well aware of the billions of years, BUT according to 2 Peter 3:8 "But do not forget this one thing, dear friends: With the Lord a day is like a thousand years, and a thousand years are like a day."
So, hypothetically (my younger self would kill me for this) since God was the only one there, this has to be from His perspective, couldn't a day mean thousands, or even billions of years in this context?