The Scriptures of Christ are all one perfectly unified word, even as the Godhead of Father, Son, and Holy Ghost. Therefore, every Scripture must be taught in context of all other Scripture, not just from verse to verse within a chapter of Scripture. To rightly teach any Scripture, we must do so in context of all Scripture taken together as one complete word.
If we separate one Scripture from other Scriptures, not just verse to verse within a certain chapter, but also from other chapters and books, then we are falsely teaching Scripture out of context. The end result with be contradicting the unity of Scripture written for doctrine and prophecy of God.
This is commonly done by unbelievers seeking fault with Scripture, to say God's words are not inerrant.
Isa 45:7
I form the light, and create darkness: I make peace, and create evil: I the LORD do all these things.
From this one verse alone, anyone could teach that the God of the Bible is the creator of evil things, and so is an evil creator doing evil things. However taken in context of all Scripture together:
Jas 1:13
Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man:
Here we see that God cannot do evil, because He can't even be tempted with evil. Nor does He tempt anyone to do evil. Therefore, Is 45:7 must be read and taught in context of James 1:13, that the God of the Bible cannot be an evil Creator creating and doing evil. Such as the pagan God Moloch.
Such false accusations against the God of the Bible, however is also done by believers, in order to teach their own false doctrine.
Eph{2:8}
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
By this verse alone, anyone could say that salvation is only by faith through faith, to the exclusion of repentance and works.
By that rule of exclusion from other Scriptures:
Gal 2:16
Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ,
By this verse alone, anyone could say that justification is by faith of Jesus Christ alone, to the exclusion of repentance and works and grace.
Titus{3:3}
But after that the kindness and love of God our Saviour toward man appeared, Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;
And by this verse alone, anyone can say that salvation is by the mercy of God alone, to the exclusion of repentance and works and grace and faith.
However, taken in context of all Scripture together, not only unifies the gospel of Jesus Christ into one principle doctrine, but also does away with the ad absurdum of isolating one Scripture to the exclusion of others:
Mark{1:15}
The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel.
Heb {6:1}
Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
Acts 3:19
Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;
2 Cor 7:10
For godly sorrow worketh repentance to salvation not to be repented of:
Repentance is principally necessary for salvation by grace through faith toward God.
James{2:14}
What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?...Even so faith, if it hath not works, is dead, being alone.
James{2:21}
Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar?...Ye see then how that by works a man is justified, and not by faith only.
And works are necessary to be saved and justified by grace through faith of Jesus Christ.
And so, when we read any Scripture, we must always include all Scripture pertaining to the same thing, in order to know the unified principle gospel and doctrine of Jesus Christ.
Anyone teaching falsely from any certain Scripture, but excluding other Scripture pertaining to it, is advocating for a gospel and doctrine of another Christ, not the Jesus Christ of Scriptures.
Gal 1:6
I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel. Which is not another; but there be some that trouble you, and would pervert the gospel of Christ.
Mark 13:22
For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect.
