Perfect obedience is necessary for Christ to fulfill the redemptive will of God and to be our perfect Savior.
In the context of salvation history, perfect obedience is critical for Christ because, as our federal head, He must meet the Law's requirements without fail. His life of obedience is what qualifies Him to bear the weight of humanity's sins and offer Himself as the ultimate sacrifice. As the sermon points out, His obedience must be unbroken from cradle to cross to fulfill all righteousness, thus paving the way for sinners to be reconciled to God. Without this obedience, His role as our Savior would be compromised, as He could not be the perfect high priest who understands and represents us before a holy God.
Scripture References:
Luke 4:1-13, Hebrews 2:10, Hebrews 10:9
Commentary