Faith is a central tenet of Christianity, and it refers to belief and trust in God and His teachings. Christians believe that faith is necessary for salvation and that it is a gift from God. Faith in Christianity is not simply a matter of believing that God exists, but also trusting in His promises and living according to His will. Christians believe that through faith in Jesus Christ, they can receive forgiveness of sins and eternal life. In the New Testament, faith is often described as the means by which Christians are justified before God. Additionally, Christians believe that faith is meant to be expressed through good works and living a moral and upright life.