How do we know that Christ's blood is essential for salvation?

The necessity of Christ's blood for salvation is grounded in biblical doctrine, particularly as emphasized in John 6:54-56. Jesus asserts that without partaking in His flesh and blood, we have no life in us. This signifies that His sacrificial blood serves as the foundation for reconciliation and life with God. The sacrifices of the Old Testament merely foreshadowed the ultimate sacrifice of Christ. Thus, His blood not only atones for sin but also establishes a new and better covenant, allowing believers to partake of His life-giving promise.