The phrase "give faith" suggests imparting trust and confidence to someone. Synonyms for this term could include "inspire confidence," "instill trust," "reassure," "encourage belief," or "convince." Other related phrases to "give faith" might include "strengthen one's beliefs," "foster trust," "bolster confidence," "build up faith," or "inculcate conviction." All of these phrases suggest the positive emotions and trust-building actions that go into giving faith to another person. Whether it's a friend, family member, or colleague, having faith in someone can be a powerful motivator and source of emotional support.