Having faith in someone or something is an essential aspect of life. It helps you to trust and believe in the power of someone or something. There are several synonyms for the phrase "have faith in" such as trust, believe in, depend on, rely on, count on, have confidence in, have belief in and have conviction in. All these synonyms connote the idea of having faith in something or someone. To trust someone means to have faith in their actions, decisions, and abilities. To rely on someone is to have unwavering faith that they will come through for you. Whatever the synonym may be, having faith is a crucial aspect of life.