Why is faith in Christ important for forgiveness of sins?

Faith in Jesus Christ is crucial for receiving forgiveness of sins because, as noted in John 3:16, 'For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.' This underscores that faith in Christ is not merely optimistic belief but a trusting reliance on Him as Savior. It is through His sacrificial death and resurrection that our sins are fully paid for and forgiveness is granted. This aligns with the Reformed emphasis that redemption is accomplished solely by Christ's atoning work, accessible to all who believe.