How to read · Method
Let scripture interpret scripture
The oldest study tool there is: when a passage is dark, go and find the place it is quoting.
In the wilderness, the tempter quotes Psalm 91 at Jesus — angels, hands, not a foot dashed against a stone. It is a real psalm, quoted accurately. Jesus answers it with Deuteronomy: you shall not put the Lord your God to the test. One passage held against another; the misuse corrected not with a new idea but with an older text. If you want a picture of this method, that is the picture: even scripture quoted accurately can be aimed wrongly, and the correction came from scripture.
The principle is simple to say: the Bible is its own best commentary. Before you reach for what a passage might mean, go and find the other places that speak to the same thing — the text it quotes, the story it retells, the promise it fulfils or strains against. The Reformers gave the practice its slogan, but they did not invent it. The New Testament writers were already doing it on nearly every page, reading their scriptures as one long, coherent argument in which the parts explain each other.
The tooling for this is already in your hands. Those small letters and references crowding the margin of most Bibles are cross-references: places where an editor has marked that this verse quotes, echoes, or answers that one. Most readers treat them as decoration. They are the opposite — a map of the book’s internal conversation, compiled so you do not have to hold the whole canon in your head. Following two or three of them is the fastest way to watch a dark verse light up.
The richest seam is quotation. When the New Testament quotes the Old, something is always happening, and the habit to build is refusing to settle for the quoted line alone. Go back and read the whole original paragraph. Hebrews quotes Jeremiah’s new covenant at length — the point is not the ornament but the claim that the promise has arrived. And when the wording shifts between the original and the quotation, slow down: what changed in the quoting is usually the argument itself. The alteration is the sermon.
One rule keeps the whole method honest: let the clear passage govern the obscure one, and not the other way around. Scripture has hard verses — single lines about baptism for the dead, spirits in prison, the sons of God — and a reader determined to build on them can build almost anything. The discipline is humility about proportion: the Bible’s plain, repeated teaching is the frame, and the strange verse hangs inside the frame. When two passages seem to disagree, start from the one you can actually understand.
What this practice slowly builds is not a technique but an instinct — the sense that you are reading one book, not sixty-six strangers. Words start ringing across the shelf: seed, lamb, temple, exile, rest. You hear Genesis under John, Exodus under Matthew, the psalms under nearly everything. No single verse taught you that. The book taught it, one cross-reference at a time, which is why the oldest study tool there is remains the best one: when a passage is dark, the lamp is somewhere else in the same book.
Follow the cross-references in your margin — they are there for this.
Pick the verse that puzzles you and follow two or three of its marginal references, reading each in its own context rather than as a proof-text. You are looking for the passage your passage is talking to. If your Bible has no margin apparatus, any free online Bible will show cross-references for a verse.
When the New Testament quotes the Old, read the whole original paragraph.
Quotation was done from memory of whole passages, and the writer usually intends the surrounding argument, not just the line. Read the full paragraph — often the full chapter — the quote came from. The point being made frequently sits in the verse just before or after the one quoted.
Notice what changed in the quoting. That is usually the argument.
Set the original and the quotation side by side and look for the seam: a tense shifted, a pronoun widened, a clause dropped or added. Ask why the writer needed the line in that form. The difference between what was written and what was quoted is very often exactly what the writer is claiming.
Prefer the clear passage over the obscure one when they seem to disagree.
When two texts pull against each other, ask which one the rest of scripture repeats plainly and which one stands nearly alone. Build on the repeated one, and let the strange verse stay strange for now. An honest "I do not know yet" is a better reading than a clever system built on one dark line.
Chaining verses that merely share a word
The same English word does not make two passages about the same thing — "flesh" in Genesis and "flesh" in Romans are doing different work. Connect passages by subject and by actual quotation, not by concordance coincidence.
Reading the quoted line without the original context
Stopping at the quoted words themselves misses the argument, because the writer is usually invoking the whole passage. The paragraph around the original is where the meaning of the quotation lives.
Building a doctrine on the obscure verse
The method has a direction: clear interprets unclear. Reversing it — making the strange verse the key and bending the plain ones around it — is how a private theory gets dressed up as a discovery.
Using cross-references to win rather than to read
A margin can be mined for ammunition, three references deep, without a single passage being heard. If every chain you follow ends where you already stood, you are collecting, not reading.
Matthew 4:1–11
Both uses of the method in one scene — scripture quoted to distort, and scripture answered with scripture.
Hebrews 8 with Jeremiah 31:31–34
The New Testament’s longest Old Testament quotation, worth reading in both homes to see what arrival changes.
Romans 4 with Genesis 15:1–6
Paul builds an entire argument on one sentence about Abraham — watch how much weight the original context carries.