faith in + person or idea
Expressing trust or belief
Use faith in for confidence, trust, or religious belief.
Many people place their faith in science and education.
Using prepositions with "faith"
Faith most commonly combines with in. Other prepositions may appear in specific expressions or as part of a larger sentence structure.
Quick answer
Which prepositions go with "faith"?
Faith in is the standard pattern for trust or belief in someone or something. Faith to appears in formal expressions about loyalty. By faith is an adverbial expression meaning through belief. On faith is uncommon except in fixed phrases such as take on faith. Faith of usually identifies whose faith is meant.
She has complete faith in her doctor.
The knight remained faithful to his promise.
They accepted the claim on faith alone.
The knight remained faithful to his promise.
They accepted the claim on faith alone.
Choose the pattern by meaning
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
faith of + group or person
Identifying whose belief
Faith of connects faith to the person or group that holds it.
The ceremony reflected the faith of the community.
by faith
Describing action guided by belief
By faith is an adverbial phrase often used in religious or literary contexts.
They continued by faith despite uncertainty.
on faith
Accepting something without proof
On faith appears in expressions such as take on faith.
I accepted the explanation on faith at first.
See the difference in context
The same subject can take different constructions because each sentence answers a different question.
Construction
Example
Meaning
faith in
She has faith in her team.
trust or confidence
faith of
The faith of the villagers remained strong.
belief belonging to a group or person
by faith
He lived by faith for many years.
guided through belief
on faith
We took the report on faith.
accepted without proof
faith to
The phrase faith to is rare; English more often uses faithful to or faith in.
limited and formal use
Common mistakes
Some combinations appear in real text but do not mean what learners often assume.
Using "faith to" instead of "faith in"
For trust or confidence, English normally uses faith in.
✕ I have faith to my friends. ✓ I have faith in my friends.Confusing "faithful to" with "faith to"
Faithful to is the common adjective pattern.
✕ She stayed faith to her ideals. ✓ She stayed faithful to her ideals.Overusing "on faith"
On faith usually appears in specific expressions like take on faith.
✓ They took his statement on faith.Using "in faith" for general trust
In faith exists in religious or legal language, but faith in is more common for trust.
✕ She has in faith her coach. ✓ She has faith in her coach.Quick practice
Choose the expression that matches the intended meaning.
1. I have complete faith ___ my colleagues.
2. The decision was accepted ___ faith without evidence.
3. The novel explores the faith ___ a small community.
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Frequently asked questions
What is the most common preposition with "faith"?
Faith in is the standard expression for trust or belief.
Is "faith to" correct?
It is rare and formal. English usually prefers faithful to or faith in.
What does "on faith" mean?
It means accepting something without proof or direct evidence.
Related preposition guides
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