It’s real simple. If you believe, then your Faith follows what the Bible says and you believe the Bible is 100% spot on. If one part of it you do not believe, then you are saying that God made a mistake. My God does not make mistakes. The Bible is 100% true because I believe in the death, burial and resurrection of my LORD Jesus Christ. I don’t worry about whether the earth is 6,000 days, six billion years, or whatever. God told me He created the earth. That was enough for me. He elected not to give us any greater details. One day in Heaven we will know all. I will worry about it then.
Do you believe in the Firmament? The invisible dome that separates the Earth and the heavenly ocean? If you take the Bible literally on the Creation story you must also believe in this.
2nd Peter 3:8
But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.
Well, not really.