Back when I was a kid the minister or Sunday school teacher, I don't remember which, was talking about how God provided us with "General Revelation", which was the material universe, and "Special Revelation", which he memorably described by holding up a Bible and noting that he was holding the sum total of God's Special Revelation.
General Revelation tells us about God because God caused the universe to come into being and it therefore reflects His nature, and Special Revelation was explicitly provided to us by inspiration, dictation, and the observation and recording of historical events.
The two must be in harmony because God is rational and so it would make no sense for these two representations of God's nature to be in conflict with one another. Throughout history, however, there has been a perceived conflict between the Universe as we understand it versus the content of the Bible, a conflict that continues to the present day.
General and Special Revelation, while related, are distinct bodies of knowledge. Each informs the other, and our goal is to increase our understanding of them, coming closer to the fundamental Truths of each.
Our knowledge of what the universe is, from quarks to cosmos, evolves over time as we're able to build on the knowledge that was gathered before, and as our technology gives us access to information about the universe that was previously inaccessible.
Likewise our understanding of the Bible grows and changes over time, as our culture and society become more sophisticated: no more the explicit subordination of women, tolerance of slavery, or genocide. Arguing that the Bible is always taken literally, and not subject to interpretation, is specious: for example, very few conservative Christian churches implement 1 Cor 11:5-6 regarding the covering of women's heads in church.
Our knowledge of the universe is imperfect, and our wisdom in interpreting the Bible is imperfect, but in my opinion we have a good overall handle on both. When the two come into apparent conflict, research, reconsideration, and refinement of our understanding of one or the other (or both) is needed.
The material universe, and our knowledge of it, is objective. It can be observed, measured, and experimented upon. It works consistently and reliably in its framework of physical laws, and it truly has no secrets, only things that have not yet been discovered.
Special revelation provides an explanation and rationale for our place in the universe, it addresses existential, ethical, moral, and philosophical issues of what is humanity, and how we should then live.
The Special Revelation of the Bible builds on the General Revelation of the universe, so it cannot contradict it.
When the two appear to conflict, more research and study, in pursuit of a more complete understanding, is needed. The Bible "amplifies" the understanding and explanation of nature, it does not define it. The material universe is as it is, its reality is its own definition.
Astronomy and geology have determined that the universe is 13.7 billion years old, and the earth 4.6 billion, respectively, and these are objective facts. The "young earth" interpretation some make of the Bible's Genesis account of creation that concludes the Earth is 6000 years old flies in the face of the facts, and so is clearly wrong. The "six days" of creation obviously can't be interpreted to mean six literal 24-hour days, because that interpretation conflicts with reality. And that should've been the end of that debate once the ages of the Earth and the universe had gotten pinned down.
Putting primacy on one's interpretation of Biblical passages when discussing objective reality, i.e. the behavior and composition of the universe, is misguided, it's mixing apples and oranges. Too many Christians don't understand this, and think that citing the Bible to support one's belief about any particular subject, spiritual or material, is irrefutable proof that that belief is a fact. (In actuality, the facts of the nature of the material universe are right in front of one, and all that's required is a willingness to study, analyze, and understand. And maybe an NSF grant or two :-)
Since the Bible literally defines the Christian faith, citing the Bible is perfectly valid in that domain, e.g., "What is the Christian conception of 'Heaven'?".
But it's much less so when stepping outside that domain: "How do you know there's a heaven?" "Because the Bible says so." Such an assertion is completely lost on an atheist or anyone who doesn't acknowledge the Bible as an authoritative document.
Christians, especially conservative ones, don't seem to grasp this latter point--because that authority is an intrinsic part of their belief system, discounting it is inexplicable, and so it's concluded that the work of the Devil is the ONLY possible explanation.
For a person to become a Christian, they need to understand what the Christian faith is, and accept that it's a valid faith. Now one obviously uses the Bible to describe what it is, to show that it is internally consistent, and to show that it is consistent with human nature, but one can't use the Bible to "prove" the Bible. A person who moves from non-believer to believer may have it come on them like a bolt from the blue--an epiphany--or it may be a long, intellectual struggle that brings one to belief, or more commonly something in between, like the example of one's whose "life changed" due to the acceptance of Christianity.
The better that Christians understand this, and what the limitations of Biblical argument and interpretation are, the more effective they can be in bringing people into God's kingdom.
But the more they try to assert the preeminence of one's interpretation of Biblical passages that touch upon the natural world in a way that seems inconsistent with observed reality, the more foolish they come across (and I don't mean foolish in a humble, edifying way, I mean foolish in a "you're wrong" kind of way). And this just makes the task harder, because not only are Christians perceived as being out of touch with reality, but by not realizing it, and worse, unwilling to alter their beliefs in the face of reality, give the perception that Christianity is more about blind loyalty to a set of detached-from-reality beliefs, rather than the living, breathing, growing faith that it is.