How Do We Know that the Bible Is True?

The Bible is an extraordinary work of literature, and it makes some astonishing claims. It records the details of the creation of the universe, the origin of life, the moral law of God, the history of man’s rebellion against God, and the historical details of God’s work of redemption for all who trust in His Son. Moreover, the Bible claims to be God’s revelation to mankind. If true, this has implications for all aspects of life: how we should live, why we exist, what happens when we die, and what our meaning and purpose is. But how do we know if the claims of the Bible are true?

Some Typical Answers

A number of Christians have tried to answer this question. Unfortunately, not all of those answers have been as cogent as we might hope. Some answers make very little sense at all. Others have some merit but fall short of proving the truth of the Bible with certainty. Let’s consider some of the arguments that have been put forth by Christians.

A Subjective Standard

Some Christians have argued for the truth of the Scriptures by pointing to the changes in their own lives that belief in the God who inspired the Bible has induced. Receiving Jesus as Lord is a life-changing experience that brings great joy. A believer is a “new creation” (2 Corinthians 5:17). However, this change does not in and of itself prove the Bible is true. People might experience positive feelings and changes by believing in a position that happens to be false.
At best, a changed life shows consistency with the Scriptures. We would expect a difference in attitudes and actions given that the Bible is true. Although giving a testimony is certainly acceptable, a changed life does not (by itself) demonstrate the truth of the Scriptures. Even an atheist might argue that his belief in atheism produces feelings of inner peace or satisfaction. This does not mean that his position is true.

By Faith

When asked how they know that the Bible is true, some Christians have answered, “We know the Bible is true by faith.” While that answer may sound pious, it is not very logical, nor is it a correct application of Scripture. Faith is the confident belief in something that you cannot perceive with your senses (Hebrews 11:1). So when I believe without observation that the earth’s core is molten, I am acting on a type of faith. Likewise, when I believe in God whom I cannot directly see, I am acting on faith. Don’t misunderstand. We should indeed have faith in God and His Word. But the “by faith” response does not actually answer the objection that has been posed—namely, how we know that the Bible is true.
Since faith is a belief in something unseen, the above response is not a good argument. “We know by faith” is the equivalent of saying, “We know by believing.” But clearly, the act of believing in something doesn’t necessarily make it true. A person doesn’t really know something just by believing it. He simply believes it. So the response is essentially, “We believe because we believe.” While it is true that we believe, this answer is totally irrelevant to the question being asked. It is a non-answer. Such a response is not acceptable for a person who is a follower of Christ. The Bible teaches that we are to be ready to give an answer to anyone who asks a reason of the hope that is within us (1 Peter 3:15). Saying that we have faith is not the same as giving a reason for that faith.

Begging the Question

Some have cited 2 Timothy 3:16 as proof that the Bible is the inerrant Word of God. This text indicates that all Scripture is inspired by God (or “God-breathed”) and useful for teaching. That is, every writing in the Bible is a revelation from God that can be trusted as factually true. Clearly, if the Bible is given by revelation of the God of truth, then it can be trusted at every point as an accurate depiction. The problem with answering the question this way is that it presupposes that the verse itself is truthful—which is the very claim at issue.
In other words, how do we know that 2 Timothy 3:16 is true? “Well it’s in the Bible,” some might say. But how do we know the Bible is true? “2 Timothy 3:16 assures us that it is.” This is a vicious circular argument. It must first arbitrarily assume the very thing it is trying to prove. Circular reasoning of this type (while technically valid) is not useful in a debate because it does not prove anything beyond what it merely assumes. After all, this type of argument would be equally valid for any other book that claims to be inspired by God. How do we know that book X is inspired by God? “Because it says it is.” But how do we know that what it’s saying is true? “Well, God wouldn’t lie!”
On the other hand, some Christians might go too far the other way—thinking that what the Bible says about itself is utterly irrelevant to the question of its truthfulness or its inspiration from God. This, too, is a mistake. After all, how would we know that a book is inspired by God unless it claimed to be? Think about it: how do you know who wrote a particular book? The book itself usually states who the author is. Most people are willing to accept what a book says about itself unless they have good evidence to the contrary.
So it is quite relevant that the Bible itself claims to be inspired by God. It does claim that all of its assertions are true and useful for teaching. Such statements do prove at least that the writers of the Bible considered it to be not merely their own opinion, but in fact the inerrant Word of God. However, arguing that the Bible must be true solely on the basis that it says so is not a powerful argument. Yes, it is a relevant claim. But we need some additional information if we are to escape a vicious circle
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