BibleHearthHebrews 11:1
1Now faith is confidence in what we hope for and assurance about what we do not see.
The chapter's opening definition, immediately followed by a long list of people who died without receiving what was promised.
Bible Verses About Faith
Hebrews defines faith as confidence about what is not yet seen, which makes uncertainty part of the definition rather than evidence against it. Scripture presents it as received rather than generated — a gift, in Ephesians — and repeatedly records people who believed and doubted in the same breath. What it consistently rejects is faith that stays purely internal.
Faith is confidence about what cannot yet be seen
The definitional passages tie faith to the unseen deliberately. Certainty based on evidence would not need the word.
2 Corinthians 5:7
7For we live by faith, not by sight.
Paul contrasts faith with sight rather than with reason, which is a narrower claim than it is usually quoted as making.
Hebrews 11:6
6And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him.
Sets a deliberately minimal bar — that God exists and rewards those who seek him — rather than a detailed creed.
It is described as received, not manufactured
Where Scripture explains the origin of faith it points outside the person, which is what keeps it from becoming a performance metric.
Ephesians 2:8-9
8For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God— 9not by works, so that no one can boast.
Paul is explicit that the whole arrangement is a gift, closing off boasting as the intended application.
Romans 10:17
17Consequently, faith comes from hearing the message, and the message is heard through the word about Christ.
Faith is traced to hearing a message rather than to temperament or effort.
Faith and doubt appear together without contradiction
Scripture preserves several prayers in which belief and unbelief are confessed simultaneously, and treats them as acceptable.
Mark 9:24
24Immediately the boy’s father exclaimed, “I do believe; help me overcome my unbelief!”
A father asking for his son's healing says he believes and asks for help with his unbelief; Jesus heals the boy anyway.
Matthew 17:20
20He replied, “Because you have so little faith. Truly I tell you, if you have faith as small as a mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move. Nothing will be impossible for you.”
The mustard-seed comparison is about size, and the point is that very little is required — the opposite of how it is usually deployed.
Faith that stays internal is treated as incomplete
James and Paul are often set against each other here, but both insist that real faith becomes visible; they differ on emphasis, not substance.
James 2:17
17In the same way, faith by itself, if it is not accompanied by action, is dead.
James is arguing against a claimed faith that leaves a hungry person unfed, not against grace.
Romans 1:17
17For in the gospel the righteousness of God is revealed—a righteousness that is by faith from first to last, just as it is written: “The righteous will live by faith.”
Paul quotes Habakkuk to describe a whole life lived from faith rather than a single moment of assent.
What these verses do not mean
Matthew 17:20 is the most damaging misquotation here. The mustard seed is an image of how little faith is needed, but it gets used to tell people their prayer failed because they did not believe hard enough — which makes faith a currency and suffering a verdict. Nothing in Scripture supports that: Paul had extraordinary faith and was refused healing three times. Faith is also not the opposite of thinking or of doubting. Hebrews 11 lists people who argued with God, and Mark 9:24 preserves a prayer that admits unbelief and is answered anyway. Finally, "faith" in Scripture is not confidence in a desired outcome — it is trust in a person, which is why it can survive the outcome going the other way.
Hebrews 11 is usually read as a hall of fame. Read to the end it is stranger than that — the chapter closes by noting that none of the people listed received what they were promised during their lives.
That ending is what the definition at the top is for. Faith in this chapter is not what you have when things work out. It is what the people who did not see it work out had.
Common questions about faith
What is the biblical definition of faith?
Hebrews 11:1 defines it as confidence in what is hoped for and assurance about what is not seen. The definition builds uncertainty in rather than excluding it — the chapter goes on to list people commended for faith who died without receiving what they were promised.
Do faith and works contradict each other in the Bible?
They address different questions. Paul argues in Ephesians 2:8-9 that salvation is not earned by works, answering how a person is put right with God. James argues in 2:17 that faith producing nothing is dead, answering how genuine faith can be recognised. Both reject a faith that is only a claim.
Is it a sin to doubt?
Scripture does not treat it that way. Mark 9:24 records a man confessing belief and unbelief in the same sentence and receiving what he asked for, Thomas is invited to inspect the evidence rather than rebuked out of hand, and the Psalms are full of hard questions. Doubt directed at God tends to be treated as a form of engagement.