Many times I have tried to show somebody an important truth in the word of God only to have the person basically completely ignore the scripture I have shown them and then quote another Bible verse to me as if to attempt to disprove the scripture that I have just laid before their eyes. Let us not deal thus with the word of God. The scriptures are perfectly woven from beginning to end by the Spirit of God. And they are not to be used to fight against each other. Such attempts show extreme immaturity of understanding and a severe lack of respect for the holy scriptures. As our Lord Jesus said: "The scripture cannot be broken." We CANNOT use scripture AGAINST scripture. The word of God does NOT contradict itself. We must remain humble to LEARN and to UNDERSTAND every piece of the word of God properly and then see how it ALL fits together as a masterpiece of God.

Here are a few key principles to know and understand in order to prevent trying to overthrow scripture with scripture:  

1. Let us show some stillness and honour before the holy scriptures. Many people are more interested in proving their point or defending their church's position instead of actually HEARING the voice of the word of God. If someone ever shows you a scripture you have never seen, don't be quick to brush it aside. Be still to really drink it in.  See if you can grasp what it is saying.  Read the verses around it to understand the context.  But above all, show some honour for the scriptures and meditate upon them.
2. We must know the time and place and covenant (or testament) in which we are in. The instructions that God gave to Noah were good and true; however, we must never think that just because God told Noah to build an ark to be saved from the wrath to come, that now we must build an ark to be saved from the wrath to come. That would be foolish. The command that God gave to Noah was not directed at us. So too, all of the commands that God gave Israel under the Old Covenant were not given directly to US as Gentiles during the time of the New Covenant. While we can learn a lot about our God and his standards of righteousness and holiness. And while many of those judgments do transcend time and covenant in terms of being morally right in all ages, we cannot bind ourselves or anyone else to the specific instructions of these Old Testament commands as this covenant has been done away in Christ at the cross and Jesus has established a New and better covenant in his blood. Consider the following Old Testament command: "Nevertheless these shall ye not eat of them that chew the cud, or of them that divide the hoof: as the camel, because he cheweth the cud, but divideth not the hoof; he is unclean unto you. And the coney, because he cheweth the cud, but divideth not the hoof; he is unclean unto you,” (Leviticus 11:4-5). Notice, he is speaking specifically to the nation of Israel under the Old Covenant and says that these creatures are "unclean unto you [Israel].” Therefore, what Paul says in 1 Timothy 4:4 stands as the CURRENT truth under the NEW COVENANT and we cannot use what God commanded in Leviticus to overthrow this New Covenant truth, "For every creature of God is good, and nothing to be refused, if it be received with thanksgiving..." So whenever there is a contradiction between a specific Old Testament command and a New Testament command, we believe BOTH to be true; but we understand that the New Testament command is the CURRENT BINDING TRUTH of which we must obey. The Old Testament command was true and binding for Israel during the time of the law, but is no longer binding. Some people, however, take this truth and misuse it to try to either ignore everything God did before Jesus Christ came or to overthrow every law and judgment given under the law as being irrelevant today. This is a great error and has no basis in spiritual reality. The same God who killed 24,000 due to their whoredoms and fornication is the same God who in Christ forgave the adulterous woman. This does not mean that nowadays God doesn't care if you commit fornication. It doesn't mean that adulterers are okay with Christ. It is just showing how sometimes God chooses to execute judgment against sin and other times he decides to show mercy and grant forgiveness (usually depending upon the hearts of those who commit the sin; whether they be broken and contrite or hardened in pride and arrogance; by the way, God also forgave a man and woman who committed adultery in the Old Testament under the law by the names of David and Bathsheba; and he also killed two liars in the New Testament church, Ananias and Sapphire; see, it's the same God.). But let us know and understand that when there is a direct contradiction between specific commands in the Old and New testaments, the New Testament command is binding. (Including the issue of obedience to honour the sabbath da which was under the Old Testament NOT under the New Testament; see Exodus 20:8 with Colossians 2:8-17)
3. The eternal declarations of Jesus Christ stand as supreme absolute truth. People who try to use things that Paul wrote to overthrow the words of Christ, have no idea what they are doing. Jesus Christ is the chief cornerstone of the New Testament Church and every spiritual truth that he stated is pure gold. Christ's word stands supreme above all other voices as dictating absolute truth about the Father, himself, the Spirit, the kingdom of God, his return, heaven, hell, the final judgment, etc. Anyone who tries to use something that Paul or Peter wrote to try to overthrow the clear absolute words of Christ has no idea what they are doing. We CANNOT use Paul to overthrow Christ. Paul would never do such a thing, let us never attempt to commit such foolishness. As we stated before, the scripture CANNOT be broken. So Paul, Peter, James, John, and Jude will NEVER contradict Jesus Christ. They cannot contradict. They all spoke by the SAME HOLY GHOST!  But here is an important principle: If they APPEAR to contradict, we always take Christ's word as the final absolute authority, and then from there we try to see if we can properly understand what Paul was revealing by the Holy Ghost.  When Paul writes, he packs much information into his letters.  Often, it takes a long time and many years of study and obedience to the Lord to begin to really get a solid grasp of what he is saying.  So whenever Paul and Jesus APPEAR to contradict, let us know that they DO NOT.  Let us take Christ's words as our pillar of truth.  And then let us allow time for us to grow in understanding until we can truly know and understand what Paul was writing about and not just come to a quick conclusion and try to make the scripture break apart.  Let me give an example. Jesus said: "Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life." (John 5:24). He also said: "My sheep hear my voice, and I know them, and they follow me: And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand." So according to Jesus Christ, those who truly hear his word and believe on HIM and the FATHER, have everlasting life and will never come into condemnation (be damned at the resurrection of damnation). And those who are truly his sheep, HEAR his voice, follow him, receive eternal life from Christ, and shall NEVER perish. These statements are ABSOLUTE statements by Jesus Christ.  Let's show him some honour and respect and trust what he said.  Heaven and earth shall pass away, but his WORDS shall stand.  Let us not brush aside his words lightly and then try to rush to find something that Paul wrote that we are unsure of and try to use it to overthrow the words of Christ.  Jesus gave NO exceptions in these statements.  (By the way, sometimes Jesus does give an exception when there is an exception, but here, he gave none because there are no exceptions to this truth.)  The true sheep of Christ that believe on HIM will NEVER perish. It is impossible to be a true believer and end up being lost according to Jesus Christ (also see John 6:35-40).  So when we read passages in Hebrews 3, Hebrews 6, and Hebrews 10 about people who appear to be saved and then fall away and perish; clearly we are not reading about true believers or true sheep.  Jesus knows from the beginning who will believe and who won't.  He is not confused.  What Paul is writing about is a real possibility (he's not making up some nonexistent theoretical situation).  But he is not writing about people who truly belong to Christ.  (Otherwise, he would be contradicting Jesus himself; and we know that Paul filled with the Spirit of Christ would not contradict Jesus).  So clearly, Paul is talking about people who APPEAR to belong to Christ (appear to be saved sheep), but actually over time and due to trials and temptations FALL away or DEPART from the congregation of the LORD and prove themselves to not be true believers/sheep but actually are revealed to be unbelievers/goats ("evil heart of unbelief").  Does this make sense?  When God speaks in Isaiah he is declaring ABSOLUTE truth.  I cannot use something Solomon wrote in Ecclesiastes to overthrow CLEAR REVELATION from God himself.  When Jesus speaks in the gospels he is declaring ABSOLUTE truth.  I cannot use something that Jude wrote to overthrow the CLEAR REVELATION from Christ himself.
4. Know the difference between absolute laws and specific instructions for a given time. When Jesus said "Except a man be born again, he cannot see the kingdom of God", he was stating an absolute spiritual law. No man can see the kingdom of God naturally. The only way a man can one day see and enter the kingdom of God is he MUST be born again. This law is absolute to all natural people ever since man brought sin into the world and will be true until the final judgment. However, in Matthew 10, when Jesus chose 12 of his disciples and gave them power against all sickness and disease and evil spirits and sent them forth to preach through all of the cities of Israel and do miracles and signs and wonders, this was a specific set of instructions given to a specific group of people at a specific time in history. Some people have wrongly taken parts of this instruction (given specifically to these 12 apostles at this time) as being the general commission to all believers in the New Testament. This is clearly wrong because even later on before Jesus goes to the cross, he is going to change some of his previous instructions to these men (see Luke 22:35-38). Remember, the gospels are HISTORICAL records of Jesus Christ's ministry, death, and resurrection. And so while MUCH of what Christ taught is absolute law/truth concerning eternal life and righteousness in the kingdom of God, etc., there are parts where he is speaking to specific individuals giving specific instructions that only apply to THOSE people at THAT time (and are not for all New Testament believers). For instance, in Matthew 8:4, after Jesus healed a man with leprosy he said: "See thou tell no man; but go thy way, shew thyself to the priest, and offer the gift that Moses commanded, for a testimony unto them." Clearly this was a specific instruction to a specific person at that particular point in time. This is NOT showing us what someone should do today if they were healed by the Lord. So again, when Jesus told his 12 apostles to "Heal the sick, cleanse the lepers, raise the dead, cast out devils: freely ye have received, freely give", we cannot teach people that ALL NEW TESTAMENT BELIEVERS IN CHRIST have this kind of power and authority. This is ERROR and is being dishonest to the word of God. In the book of Acts the only ones operating in such power and authority were the APOSTLES and the MEN that the APOSTLES laid their hands on for leadership in the church. Most of the believers in Acts NEVER do any miracles or cast out any devils; only the apostles are doing such works. Nowhere in all of the New Testament letters does any other apostle teach such doctrine to the body of Christ at large. And even during that time when Jesus chose these 12 men, Jesus had more disciples and believers than just 12 (in fact, 1 of these 12 wasn't even a true believer). So clearly, this is not a COMMISSION FOR ALL NEW TESTAMENT BELIEVERS in Christ, but rather, this was a specific anointing and empowering and commissioning to a specific group of men (there wasn't a female among them) that were being called and empowered to the office of APOSTLES. And as stated before, some of these instructions would change once Christ went back to heaven (one of which being the one where they were only supposed to preach in Israel to Israelites...). So let us be able to know and identify the difference between ABSOLUTE SPIRITUAL TRUTH being revealed ("I am the light of the world, he that followeth me shall not walk in darkness but shall have the light of life") and specific commands given to specific individuals during Christ's ministry (like Jesus telling Judas to quickly go and do his evil business of betrayal at the last supper).

So let us not seek to overthrow scripture with scripture; but rather, let us be humble to understand ALL scripture in a full and proper way: understanding the time and place and covenant in which we find the scripture, who is speaking, to whom they are speaking, the context in which the passage appears, and whether it is something that directly applies to us today under the New Covenant as believers in Christ, or whether we can just learn some principles from it. If we do these things, in patient continuance, seeking for the truth and wisdom and understanding from the LORD himself, then we shall see that the words of our Lord Jesus stand true indeed: "...the scripture cannot be broken." - John 10:35b

"I have more understanding than all my teachers: for thy testimonies are my meditation." - Psalm 119:99

"I have not departed from thy judgments: for thou hast taught me." - Psalm 119:102

"Through thy precepts I get understanding: therefore I hate every false way." - Psalm 119:104

"I am thy servant; give me understanding, that I may know thy testimonies." - Psalm 119:125

"Therefore I esteem all thy precepts concerning all things to be right; and I hate every false way." - Psalm 119:128