How do we know Christ's work is sufficient for salvation?

The sufficiency of Christ's work for salvation is anchored in His divine appointment by God, His sinless nature, and His willingness to be our substitute. As articulated in the sermon, God appointed Christ as the only able and willing Savior, fulfilling the requirements of salvation. He was entirely without sin, which makes Him the perfect sacrifice. Moreover, Christ Himself proclaimed that no one took His life from Him; He laid it down willingly (John 10:18). This emphasizes His voluntary sacrifice and perfect obedience to the Father’s will. Consequently, all whom He has chosen and for whom He has died will be saved, demonstrating that His work is indeed sufficient and complete.