pin faith on

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pin (one's) faith on (someone or something)

To have expectations or hopes that are dependent on the success, performance, etc., of someone or something. Why are we pinning our faith on him when we know he's not popular enough to defeat the incumbent? I had pinned my faith on the promotion, so I was crushed when I didn't get it.
See also: faith, on, pin
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

pin one's faith on someone or something

 and pin one's hopes on someone or something
Fig. to fasten one's faith or hope to someone or something. Don't pin your faith on Tom. He can't always do exactly what you want. He pinned his hopes on being rescued soon.
See also: faith, on, pin
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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