Is Christian faith just believing something without evidence?

Key facts

• The Greek noun pistis (πίστις) and verb pisteuō (πιστεύω) carry the sense of trust in and reliance on a person, not only agreement that a statement is true. [BDAG, s.v. πίστις, πιστεύω; Thayer, s.v. πίστις]
• Before the New Testament, pistis was an everyday word in military, legal and commercial settings, describing trust between soldiers and commanders, parties to contracts and allies. [Morgan 2015]
• Hebrews 11:1 defines faith as the hypostasis (ὑπόστασις) of things hoped for and the elegchos (ἔλεγχος) of things not seen. [Hebrews 11:1, NA28]
• Hypostasis is formed from hypo ("under") and stasis ("a standing") and means that which stands under or supports something. [BDAG, s.v. ὑπόστασις]
• Commercial and legal papyri from Oxyrhynchus, Egypt, use hypostasis for a title deed or proof of ownership. [Grenfell and Hunt, The Oxyrhynchus Papyri]
• Elegchos means proof or demonstration, the kind of argument that convicts or establishes a case. [BDAG, s.v. ἔλεγχος]
• The Amplified Bible renders Hebrews 11:1 with the gloss "title deed, confirmation" for the word translated "assurance". [Amplified Bible, Hebrews 11:1]
• In 2 Corinthians 5:7 ("we walk by faith, not by sight") the word for "sight" is eidos (εἶδος), meaning visible form or outward appearance, not the faculty of evaluating evidence. [BDAG; The Weight of God, Ch. 8]
• In Proverbs 3:5 the instruction not to "lean on" one's own understanding uses sha'an (שָׁעַן), to prop oneself up on a support, and binah (בִּינָה), discernment. [BDB, s.v. שָׁעַן; The Weight of God, Ch. 4]
• The "shield of faith" in Ephesians 6:16 is a thureos (θυρεός), a word related to thura (θύρα, "door"): the large shield a soldier stood behind, not a small hand shield. [BDAG, s.v. θυρεός; The Weight of God, Ch. 8]

Key terms

pistis πίστις

trust or reliance placed on a person judged reliable; the New Testament noun translated 'faith'

hypostasis ὑπόστασις

literally 'that which stands under'; foundation, substance, or (in legal papyri) title deed

elegchos ἔλεγχος

proof, demonstration, conviction; a term at home in legal argument

elpis ἐλπίς

hope; confident expectation resting on a promise

eidos εἶδος

visible form or outward appearance (2 Corinthians 5:7)

thureos θυρεός

the large door-shaped shield a soldier stood behind (Ephesians 6:16)

batach בָּטַח

to trust; to put one's full weight on (Proverbs 3:5)

Explanation

Where the "blind faith" idea comes from

In current English, "faith" is often used for a belief a person holds without proof. A line widely attributed to Richard Dawkins puts the criticism sharply, describing faith as belief without evidence and reason, and therefore akin to delusion. The Weight of God accepts the logic of that criticism on its own terms: if faith really meant agreeing to a claim without evidence, it would be hard to distinguish from wishful thinking. The book's case is that the premise is wrong. The criticism evaluates the modern English word, not the Greek word the New Testament uses.

What pistis meant in the first century

Pistis was not a specialist religious term. Teresa Morgan's study of pistis and fides in the early Roman Empire traces its secular use in military, legal and commercial relationships. In those settings pistis was trust extended to someone whose reliability mattered: a commander, a business partner, a party to an oath. The standard lexicons give trust, reliance and confidence as core senses of the word group. The question pistis answers is not "is this statement true?" but "can this person bear my weight?"

How Hebrews 11:1 defines faith

Hebrews 11:1 is the closest the New Testament comes to a definition. The NIV renders it: "Now faith is confidence in what we hope for and assurance about what we do not see" (NIV). The two key nouns are concrete:

• Hypostasis literally means "that which stands under". It has a range of senses, including foundation, substance and reality; the Latin Vulgate rendered it substantia. In legal papyri from Oxyrhynchus it refers to a title deed, the document that proves ownership.
• Elegchos means proof or demonstration, the kind of case that establishes a matter.

Translations differ ("assurance", "confidence", "substance"; "conviction", "evidence"), but none of the attested senses means a guess. The "hope" (elpis) in view is confident expectation resting on a promise, not optimism. On this definition, faith is the ground under a person's hope, and the evidence for what cannot yet be seen.

Hebrews 11 as a record of action

The chapter that follows the definition lists people whose trust produced costly, visible action: Abel's offering, Noah's ark, Abraham leaving his homeland, Moses refusing Egypt's privileges, Rahab sheltering the spies (Hebrews 11:4–31). The examples are not people holding opinions. They are people who acted on the reliability of the one who had promised. The book's summary: "Faith is the evidence you stand on."

"We walk by faith, not by sight"

2 Corinthians 5:7, "we walk by faith, not by sight" (ESV), is often read as an instruction to ignore evidence. The word for "sight", eidos, means visible form or appearance. The contrast is between two things a person can build a life on: present circumstances as they appear, or the declared word of God. Abraham is the book's example. He did not ignore the facts of his age and Sarah's infertility; he raised them. He then chose to rely on the one who promised (Genesis 15:6).

Trusting God and using one's mind

Proverbs 3:5 tells readers to trust (batach) in the LORD and not to lean (sha'an) on their own understanding (binah). The book reads this as a warning against using one's own reasoning as the load-bearing structure of life, not against reasoning itself. Thinking is a tool; the verse addresses what a person rests their weight on.

Common misunderstandings

• "Faith means believing without evidence." Correction: pistis means trust in someone judged reliable. Hebrews 11:1 defines faith using a word for foundation or title deed and a word for proof.
• "'Walk by faith, not by sight' means ignore the facts." Correction: eidos refers to outward appearance. The verse contrasts present appearances with God's promises as a basis for living; it does not tell anyone to stop thinking.
• "Proverbs 3:5 is anti-intellectual." Correction: the verb sha'an means to prop oneself up on a support. The verse warns against making one's own discernment the foundation of life, not against using it.
• "Strong faith is a strong feeling of certainty." Correction: in the New Testament the strength of faith depends on what it rests on. The shield of faith in Ephesians 6:16 is something a person stands behind, not a feeling they generate.

What the book argues

The Weight of God argues that the accusation of "blind faith" is a rational response to a degraded definition, and that the original definition reverses it (Chapter 8). It says the drift began when pistis passed through Latin fides and English "faith" and "believe", until faith came to mean "the word you use when you don't have evidence" (Chapter 5). Against this the book reads Hebrews 11:1 as architecture rather than psychology: faith is the load-bearing foundation of hope, and "Faith isn't the absence of evidence." Its stronger formulation, that faith is itself the evidence, is the book's interpretation of hypostasis and elegchos together, not a lexical entry. The book's central image is weight transfer: faith as the act of placing one's full weight on a person who has proved reliable, as a child falls asleep on a parent (Chapter 4). It concludes that the charge that faith is anti-evidence is "exactly backwards." (Chapter 8)

In the book: Chapter 8: Something You Cannot Prove; Chapter 4: Childlike Faith; Chapter 5: The Drift.

Sources

1. Arndt, William F., F. Wilbur Gingrich, Frederick W. Danker and Walter Bauer. A Greek-English Lexicon of the New Testament and Other Early Christian Literature, 3rd edn (BDAG). Chicago: University of Chicago Press, 2000. Entries for πίστις, πιστεύω, ὑπόστασις, ἔλεγχος.
2. Thayer, Joseph Henry. Thayer's Greek-English Lexicon of the New Testament. Peabody, MA: Hendrickson, 1995 (reprint of 1886 edn).
3. Brown, Francis, S. R. Driver and Charles A. Briggs. A Hebrew and English Lexicon of the Old Testament (BDB). Oxford: Clarendon Press, 1907. Entries for בָּטַח, שָׁעַן.
4. Morgan, Teresa. Roman Faith and Christian Faith: Pistis and Fides in the Early Roman Empire and Early Churches. Oxford: Oxford University Press, 2015.
5. Grenfell, Bernard P. and Arthur S. Hunt, eds. The Oxyrhynchus Papyri. London: Egypt Exploration Society, 1898–ongoing.
6. Dawkins, Richard. The God Delusion. London: Bantam Press, 2006; and various public statements.
7. Novum Testamentum Graece, Nestle-Aland 28th edn (NA28).
8. Amplified Bible, Hebrews 11:1. New International Version (NIV). English Standard Version (ESV).
9. Wong, Matthew. The Weight of God: How to Believe. Australia, 2026. ISBN 978-1-7646297-3-7. Chapters 4, 5 and 8.