The phrase "a source of faith" is correct and usable in written English.
It can be used when discussing something that provides inspiration, belief, or confidence in a particular idea or principle.
Example: "For many, nature serves as a source of faith, reminding them of the beauty and complexity of life."
Alternatives: "a wellspring of belief" or "a foundation of trust".
Many other catastrophes, large and small, have befallen Paris, and that history of destruction and renewal as a source of civic faith offered a wan hope, as Notre-Dame burned on Monday.
Although he was born to a Catholic family, today he practices a different source of faith; he simply believes in God, and his religion is love.
"It is," he wrote, "at once a mode of thought, a source of strong emotion and faith as fanatical as any in history".
If you are a person of faith, use your faith as a source of personal strength to see you through.
On this view, religion and faith have a source of properly rational belief independent of reason and science; it would therefore be possible for religion and faith to correct as well as be corrected by science and reason.
In Welles's oracular script, Arkadin, a gleefully orotund storyteller, reveals nothing, but the film's love stories, untender tussles, are a source of bittersweet memories and bad faith: there Welles confesses all.
Thomas M. Lessl, a scholar at the University of Georgia who has long studied the rhetoric and societal relationships of both science and religion, is well positioned to add to the recent discussion here over whether confidence in science as a source of progress is based on faith or fact.
"But the natural man" [without the Holy Spirit] "can not discern" [evaluate] "the things of the Spirit of God, for they are foolishness to him, neither can he know them, because they are spiritually discerned".(1 Corinthians 2 14) and you know the source of faith: "So then faith [comes] by hearing, and hearing by the word of God".(Romans 10 17).
