How do we know Christ is the only acceptable offering to God?

Christ's role as the ultimate offering is established throughout Scripture, particularly seen in passages like Hebrews 10:10-14, which declare that His one-time sacrifice perfects for all time those who are being sanctified. Just as David highlights the need for an offering in 1 Samuel 26, we see that all other attempts at righteousness are futile without the blood of Christ. His redemptive work is the embodiment of God's grace, securing salvation for the elect and fulfilling all requirements of the Law.