You may have questions about the absolute authority of Scripture. The basic question about that authority comes to this: "What do you think of Christ?" If we accept Him as Lord, it's consistent to submit to His teaching on the complete authority of Scripture.
In Matthew 5:17-19 Jesus declared that "heaven and earth would sooner pass away than the dotting of an 'i' or the crossing of a 't' from the law." In Luke 16:17 He adds that it is impossible for one particle of the law to be set aside as void, and in Luke 24:25 He rebukes His disciples for not believing all that the prophets had spoken.
In John 10:34,35, in controversy with the Jews, He argues that Scripture cannot be broken, dissolved, or discarded. In Mark 7:6 and following we see that in the thought and teaching of our Lord, the law of Moses is explicitly labeled the word of God.
But you may ask, "Isn't this a circular argument? All we know about Christ we learn from the Bible. Unless we presuppose our conclusion, the entire case based on Christ has no foundation."
This emphasis on authority does not fall into this vicious circle. Faith in Christ as Lord and Savior doesn't necessarily depend on prior faith in an infallible Bible. The Christian doesn't insist that one must believe everything in the Bible before he is convinced of anything in it.
We initially come to Scripture as C. S. Lewis did. He based his faith in Christ on the general reliability of the new Testament documents as proved from history: the historical evidence for Christ's sinless life, the genuineness of His miracles, His stupendous claims as to his own person, and His bodily resurrection from the dead. He was drawn to Christ by the work of the Holy Spirit who created a true faith in him personally.
The Christian faith doesn't logically presuppose as its basis an infallible Bible, but only a New Testament that is true in its main points. The case for the authority of the bible, therefore, is not circular but structurally valid.
We are driven back to the real issue which thinking men must not avoid: "What do you think of Christ? Is He the final authority over our life and thought, or is he not?"
If He is not, that settles the matter of divine authority of Scripture. If the Bible is wrong at this main point, it is certainly wasted effort to discuss its infallibility. Many have taken this position and thus willfully placed themselves under the judgement of the God they choose to disbelieve and ignore. They choose to place their limited knowledge at a higher value than the revelation of information that comes from beyond their source of knowledge.
If, on the other hand, Jesus Christ is really divine Lord and Savior, that too settles the matter, and we should hear no more about accepting Christ but not the Bible. He has sent His Spirit to help me understand the truth in the Bible, and to enable me to apply it and obey it.
Properly understood, the Bible is believable. Our Lord commanded us as His disciples to believe it. For those of us who seriously call upon Him as Lord, there is no alternative but to accept His word. We are under orders.
The evidence is overwhelming that Jesus Christ not only claimed to be Lord but insisted that His disciples submit to His lordship by obeying Scripture. Our difficulty is not whether the Bible is infallible or authoritative, but is in obedience to its teaching.
If we believe that the Bible is true, carries divine authority, and is the source of our knowledge about Christ and His will, then we should study it. And as we do, our Lord has promised His present indwelling Holy Spirit to guide us to Biblical truth.
Jesus Himself said that we, as His followers, will be hated by the world because He is hated by the world (John 15), and He said that there is a wide way that leads to destruction, and a narrow way that leads to life (Matthew 7). There are many falsehoods but only one truth. We know we are onto truth when we find ourselves very much alone in the world. And we will know the truth, and the truth will make us free (John 8). Once we see the truth we cannot "unsee" it. Like a hidden image in a painting -- once you see it you will always know it is there. The Holy Spirit gives great confidence and assurance about truth that is difficult to attain on human terms.