The Catholic Church has long maintained that it is the one and only organisation with the right to interpret the Bible on behalf of the people. Relying on our own skill, wresting the Bible to our own senses, is not permitted. It is dangerous, according to their doctrine.
When we do rely on our own skill and wrest the Bible to our own senses, it becomes clear why they think it's so dangerous. The Bible does not support their doctrines, right down to their very attitude on scripture. But when you reject Catholic authority and study scripture instead, Catholics will say you are trusting yourself instead of God. I've even had one Catholic say "you make yourself Pope".
In reality, whether we like it or not, we will always be the final authority in what we believe. The Catholic Church may claim to interpret the Bible for you, they cannot believe their interpretations for you. You must decide whether to trust them. Indeed, once they have told you their interpretations, you must interpret their interpretations, then decide whether or not you believe them.
In fact, that is a lot more the case than Catholics would like to admit. Within Catholicism, there is a lot of debate about what is infallible, and even how we know. Even "Papal infallibility" is rarely used, and itself was not defined until First Vatican Council (1870). The large number of disputes within the Catholic faith over which statements are infallible really throws a monkey wrench in the whole "infallible Magisterium" thing.
In order to claim going against the Catholic Church is going against God, one must claim the Catholic Church is synonymous with God. Yet, God is not that chaotic. In fact, Paul tells us "...he is not the God of disorder but of peace. As in all the churches of the holy ones," (1 Corinthians 14:33, NABRE). Since the Catholic Church causes confusion, chaos, and disorder, it is not reasonable to assume it comes from God, much less that it is so closely related to Him that denying them is the same as denying Him.
Can the same be said of the Bible? First of all, no, not even according to the Catholic Church. In Dei Verbum, we read "...Sacred Scripture is the word of God inasmuch as it is consigned to writing under the inspiration of the divine Spirit...". But we don't need the Catholic Church to tell us that. Scripture itself says "All scripture is inspired by God..." (2 Timothy 3:16) and "...no prophecy ever came through human will; but rather human beings moved by the holy Spirit spoke under the influence of God." (2 Peter 1:21).
But it gets better than that. Consider, first, that Christ only spoke what the Father spoke. "Jesus cried out and said, “Whoever believes in me believes not only in me but also in the one who sent me, and whoever sees me sees the one who sent me. I came into the world as light, so that everyone who believes in me might not remain in darkness. And if anyone hears my words and does not observe them, I do not condemn him, for I did not come to condemn the world but to save the world. Whoever rejects me and does not accept my words has something to judge him: the word that I spoke, it will condemn him on the last day, because I did not speak on my own, but the Father who sent me commanded me what to say and speak. And I know that his commandment is eternal life. So what I say, I say as the Father told me.”" (John 12:44-50).
Now follow on to John 16, when Jesus promises to send the Holy Spirit to the Apostles: "“I have much more to tell you, but you cannot bear it now. But when he comes, the Spirit of truth, he will guide you to all truth. He will not speak on his own, but he will speak what he hears, and will declare to you the things that are coming. He will glorify me, because he will take from what is mine and declare it to you. Everything that the Father has is mine; for this reason I told you that he will take from what is mine and declare it to you." (John 16:12-15).
From this, we see that the fullness of the Godhead; Father, Son, Holy Spirit, all worked on scripture with one accord, as indeed they do on everything. The Spirit receives from the Son, who receives from the Father, everything that went into the Bible. Thus, the Bible is synonymous with God Himself. It is just as authoritative as if God Himself spoke it with His own mouth.
This, by the way, really highlights the hubris of a common Catholic argument. It is erroneously claimed that there was no Bible for nearly 400 years, and it is the Catholic Church that gave us that Bible. Thus, they claim, they give the Bible its authority, not the other way around. Really? God needs your permission to speak? The Apostles couldn't declare His mysteries without your stamp of approval? The Holy Spirit, whom you claim guides your Church to this very day, is not permitted to speak to His Church unless you say so?
But Catholics might say "but what about the Apostles? Aren't you trusting in men then, as you say we are?" No. See, the Apostles themselves considered themselves mere stewards (1 Corinthians 4:1). Faithful ones, yes, but stewards nonetheless. They did not believe they had authority to make up new doctrines, nor even resist the test of scripture. As Paul Himself wrote, "But even if we or an angel from heaven should preach [to you] a gospel other than the one that we preached to you, let that one be accursed!" (Galatians 1:8, emphasis mine).
See that? Even if we, the Apostles, preach a different gospel, let that one be accursed. Well how do we know the Gospel the Apostles preached? By the scriptures the Apostles wrote. The Apostles were mere proxies. God did not write the Bible Himself, He wrote through these men. As Irenaeus wrote, in Against Heresies, Book 3, chapter 1, "We have learned from none others the plan of our salvation, than from those through whom the Gospel has come down to us, which they did at one time proclaim in public, and, at a later period, by the will of God, handed down to us in the Scriptures, to be the ground and pillar of our faith."
And the Apostles lead by example, too. They did not storm into the synagogues and say "No one may possess the books of the Old and New Testaments, and if anyone possesses
them he must turn them over to the local bishop within eight days, so that they may be burned..." (Council of Tarragona, canon 2, 1234). No, they spread their message with the scriptures. Take, for example, the account of the Bereans in Acts 17: "The brothers immediately sent Paul and Silas to Beroea during the night. Upon arrival they went to the synagogue of the Jews. These Jews were more fair-minded than those in Thessalonica, for they received the word with all willingness and examined the scriptures daily to determine whether these things were so. Many of them became believers, as did not a few of the influential Greek women and men." (v10-12).
Who searched the scriptures daily? The Jews in Berea, and apparently a few Greek men and women too. Whose message were they testing? Paul and Silas. Here's the really juicy bit: With exactly zero force, violence, or manipulation, Paul and Silas were found true. Daily search of the scriptures = yup, these guys are clearly from God, we should accept them as His messengers.
But can the same be said for the Catholic Church? Certainly not. They need their alleged authority to enforce their conclusions. Search the scriptures daily, would you ever know there was a guy claiming to be the Pope? Would you ever pray "hail Mary, Mother of God, pray for us sinners"? Would you get the impression there is a distinction between venial and mortal sins, which, if the priest does not absolve you of, will either need to be purified in Purgatory, or completely cost you your salvation? You're not going to get any of that. It requires prior exposure to the Catholic Church to even know these doctrines, much less believe them.
So in the end, who is it that really stands against God? Those who pick up His word, and believe that, or those who will reject that if their "Magisterium" tells them to? I'll give you a hint: There was another organisation in Jesus' day that also claimed to have "sacred tradition". The Pharisees, though they gave lip service to scripture, often contradicted it. Time and time again, Jesus asked them "have you not read?" And on at least one occasion, He flat out told them "How well you have set aside the commandment of God in order to uphold your tradition!" (Mark 7:9).
How did that work out for them? We know that some Pharisees were saved. Nicodemus, even Paul, both came to Christ. But the majority of them probably won't be in the Kingdom. Catholics should really ask themselves how much they want to be like that. Do they really want to lay aside the commandment of God, such as "do not seek the intercession of the dead", for human tradition, such as seeking the intercession of Mary and the saints?
Jesus tells us quite plainly, "Whoever loves me will keep my word, and my Father will love him, and we will come to him and make our dwelling with him. Whoever does not love me does not keep my words; yet the word you hear is not mine but that of the Father who sent me." (John 14:23-24). And so the choice is really simple. If you love Jesus, you will keep His words, as found in the scriptures we both acknowledge come from Him. But if you will say something so foolish as "trusting that Bible over my Church is rejecting God", you have no business claiming to be a part of the Church Jesus founded, because by His own words, you do not love Him.