📖 Biblical Definition
Faith in Scripture is not blind belief contrary to evidence but confident trust grounded in the character and promises of God. Hebrews 11:1 defines it as "the substance of things hoped for, the evidence of things not seen" — faith operates as a present reality (hypostasis, substance/assurance) toward future promises. Biblical faith is always relational: trust directed toward a personal God who has acted in history. It is inseparable from faithfulness — emunah in Hebrew encompasses both belief and the loyal obedience that flows from it. James makes clear that saving faith is never inert: "faith without works is dead" (Jas 2:26).
📜 Webster 1828 Definition
FAITH, n. [L. fides; Fr. foi.]
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FAITH, n. [L. fides; It. fede; Fr. foi; Sp. fe.]
1. Belief; the assent of the mind to the truth of what is declared by another, resting on his authority and veracity, without other evidence; the judgment that what another states or testifies is the truth.
2. The assent of the mind to the truth of a proposition advanced by another; belief, or probable evidence of any kind.
3. In theology, the assent of the mind or understanding to the truth of what God has revealed. Simple belief of the scriptures, of the being and perfections of God, and of the existence, character, and doctrines of Christ, founded on the testimony of the sacred writers, is called historical or speculative faith; a faith little distinguished from the belief of the existence and achievements of Alexander or of Caesar.
4. Evangelical, justifying, or saving faith, is the assent of the mind to the truth of divine revelation, on the authority of God's testimony, accompanied with a cordial assent of the will or approbation of the heart; an entire confidence or trust in God's character and declarations, and in the character and doctrines of Christ, with an unreserved surrender of the will to His guidance, and dependence on His merits for salvation.
5. The object of belief; a doctrine or system of doctrines believed; a system of revealed truth held by Christians.
📖 Key Scripture
• Hebrews 11:1 — "Now faith is the substance of things hoped for, the evidence of things not seen."
• Romans 10:17 — "Faith comes from hearing, and hearing through the word of Christ."
• Ephesians 2:8–9 — "For by grace you have been saved through faith…it is the gift of God."
• James 2:26 — "As the body apart from the spirit is dead, so also faith apart from works is dead."
• Habakkuk 2:4 — "The righteous shall live by his faith." (Quoted three times in the NT: Rom 1:17, Gal 3:11, Heb 10:38)
⚠️ Modern Corruption
Modern usage often treats faith as subjective feeling divorced from truth — a personal, unprovable belief system that...
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Modern usage often treats faith as subjective feeling divorced from truth — a personal, unprovable belief system that demands no evidence and admits no critique. "That's just your faith" dismisses biblical claims as private opinion. The "prosperity gospel" corrupts faith into a transaction: believe hard enough and God must deliver health and wealth. Secular usage sometimes defines faith as "belief without evidence" — the opposite of reason — when in fact Scripture presents faith as trust in what God has demonstrated. True faith is rational, historical, and publicly verifiable (1 Cor 15:1–8).
🔗 Greek & Hebrew Roots
G4102 — pistis (πίστις): faith, trust, belief; also used for faithfulness and the body of Christian doctrine ("the fa...
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G4102 — pistis (πίστις): faith, trust, belief; also used for faithfulness and the body of Christian doctrine ("the faith").
G4100 — pisteuō (πιστεύω): to believe, to trust, to commit oneself to.
H530 — emunah (אֱמוּנָה): steadiness, faithfulness, fidelity; from aman (to be firm, reliable, trustworthy).
🌐 Proto-Language Roots
PIE *bheidh- ("to trust, confide, persuade") → Latin fīdō ("to trust") → fides ("faith, trust, reliability") → ...
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PIE *bheidh- ("to trust, confide, persuade")
→ Latin fīdō ("to trust") → fides ("faith, trust, reliability")
→ Old French feid / feit
→ Middle English feith → Modern English "faith"
Latin derivatives: fidelity, confide, federal, affidavit, bona fide
Greek (related root):
PIE *bheydh- → Greek πείθω (peithō, "to persuade")
→ πίστις (pistis, G4102) — trust, faithfulness, the body of belief
Biblical parallel:
Proto-Semitic *ʾmn → Hebrew אָמַן (aman, "to be firm, reliable, sure")
→ אֱמוּנָה (emunah, H530) — steadfastness, faithfulness, fidelity
→ אָמֵן (amen) — "truly, firmly, so be it" — the world's most universal word
Usage
• "Faith is not the absence of doubt but the choice to trust God through it — every hero of Hebrews 11 acted before they received."
• "Abraham's faith was credited as righteousness not because he felt confident, but because he obeyed — faith and faithfulness are two sides of the same coin."
• "To say 'have faith' in modern usage often means 'stop thinking'; the biblical call is to think rightly about what God has promised and act accordingly."