What Does the Bible Say? Core Biblical Teachings Explained

TL;DR: The Bible presents itself as the complete, authoritative Word of God that must not be added to or diminished Deuteronomy 4:2. Jesus affirmed that every word of God sustains life Luke 4:4, and He confirmed that the Law, Prophets, and Psalms all point to Him Luke 24:44. Scripture also calls believers to holy conduct — avoiding slander Leviticus 19:16 and recognizing that only those written in the Lamb's Book of Life enter God's eternal presence Revelation 21:27.

"It is written, That man shall not live by bread alone, but by every word of God." — Luke 4:4

When Jesus quoted this to Satan in the wilderness, He wasn't just deflecting a temptation — He was making a sweeping claim about Scripture's authority over every dimension of human life Luke 4:4. The Bible isn't a collection of suggestions; it's the sustaining breath of God rendered in human language.

Jesus later reinforced this in Luke 24:44, telling His disciples that all things written in the Law of Moses, the Prophets, and the Psalms had to be fulfilled in Him Luke 24:44. That's the entire Hebrew canon pointing to a single person. And Deuteronomy 4:2 sets the boundary plainly: nothing is to be added or taken away from God's commands Deuteronomy 4:2.

Protestant · Christianity

Protestant View: Scripture Alone (Sola Scriptura)

"Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the LORD your God which I command you." — Deuteronomy 4:2

Protestants hold that the Bible is the sole infallible rule of faith and practice. Deuteronomy 4:2 is foundational here — God's Word arrives complete and must not be supplemented by human tradition or diminished by selective reading Deuteronomy 4:2. This principle, called Sola Scriptura, shaped the entire Reformation movement.

Jesus' declaration in Luke 4:4 that man lives by "every word of God" is taken with full seriousness in Protestant theology Luke 4:4. It's not enough to cherry-pick comforting passages; the whole counsel of Scripture demands attention. That's why Protestant preaching typically emphasizes expository, verse-by-verse teaching.

The ethical dimension of Scripture is equally non-negotiable. Leviticus 19:16 forbids talebearing and standing against a neighbor's blood — a reminder that biblical holiness is intensely communal and relational, not merely private Leviticus 19:16. And Revelation 21:27 grounds Christian hope in the certainty that nothing defiling enters the New Jerusalem; only those in the Lamb's Book of Life do Revelation 21:27.

Taken together, what the Bible says spans creation to new creation, law to gospel, individual conduct to cosmic destiny — and Protestants insist every word of it matters.

Key takeaways

The Bible forbids adding to or subtracting from God's Word — Deuteronomy 4:2 sets this as a non-negotiable boundary Deuteronomy 4:2.
Jesus taught that humans live by 'every word of God,' making all of Scripture essential, not optional — Luke 4:4 Luke 4:4.
Christ declared that the Law, Prophets, and Psalms all find their fulfillment in Him — Luke 24:44 Luke 24:44.
Biblical holiness includes relational ethics: Leviticus 19:16 condemns gossip and endangering neighbors in the same verse Leviticus 19:16.
Only those written in the Lamb's Book of Life enter God's eternal presence — Revelation 21:27 grounds Christian hope in Christ, not human merit Revelation 21:27.

FAQs

Does the Bible say we can add our own ideas to it?

No. Deuteronomy 4:2 is explicit: "Ye shall not add unto the word which I command you, neither shall ye diminish ought from it" Deuteronomy 4:2. This verse has been cited across Christian history as a guard against both human tradition overriding Scripture and selective removal of inconvenient commands. The Bible presents itself as a closed, authoritative deposit of divine instruction.

What does the Bible say about how we should treat our neighbors?

Leviticus 19:16 gives a pointed command: "Thou shalt not go up and down as a talebearer among thy people: neither shalt thou stand against the blood of thy neighbour" Leviticus 19:16. Gossip and endangering others are both condemned in the same breath. Biblical neighborly love isn't passive — it actively refuses to harm others through words or inaction.

What does the Bible say Jesus fulfilled?

In Luke 24:44, Jesus told His disciples that "all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me" Luke 24:44. That covers the entire tripartite structure of the Hebrew Bible. Jesus didn't come to abolish Scripture — He came as its living fulfillment and interpretive key.

What does the Bible say about who enters heaven?

Revelation 21:27 states that nothing defiling, no one who works abomination or makes a lie, "shall in no wise enter" the New Jerusalem — "but they which are written in the Lamb's book of life" Revelation 21:27. Entrance into God's eternal presence isn't based on moral achievement alone but on being recorded in Christ's book of life.

Does the Bible say God's Word is enough to sustain life?

Yes. Jesus declared in Luke 4:4, quoting Deuteronomy, that "man shall not live by bread alone, but by every word of God" Luke 4:4. This isn't metaphor — it's a claim that Scripture is as essential to human flourishing as physical food. Every word counts; none is expendable.

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