From the very beginning of Scripture, the central question has always been whether sinful man can ever return to the presence of a holy God. The Bible does not describe humanity as naturally seeking after God in purity and righteousness. Instead, Romans 3 declares that “there is no one righteous, not even one” and that “there is no one who seeks God.” Humanity’s condition after the Fall is not merely weakness, but rebellion and spiritual corruption. Romans 3:23 further explains that all have sinned and fall short of the glory of God. The separation between God and man is therefore not small or temporary, but total and universal. Left to himself, man cannot bridge this divide.
Yet the biblical story does not begin with man searching for God, but with God seeking fallen humanity. After Adam and Eve sinned in the garden, God Himself came to them. In Genesis 3:15, God spoke to the serpent and declared that the offspring of the woman would one day crush the serpent’s head, though He Himself would be wounded in the process. This verse has often been called the Protoevangelion, meaning the “first gospel,” because it introduces the first promise of redemption after the Fall. Here, the covenant of grace begins to unfold. The promise contains both suffering and victory: the coming Deliverer would suffer, yet ultimately triumph. Humanity continues under the hope of this promise.
The Old Testament progressively points toward this coming Savior. Its sacrifices, priests, kings, and prophets were not ends in themselves, but shadows anticipating something greater. The sacrificial system pointed to the need for a substitute who could bear sin. The priesthood pointed to the need for a mediator between God and man. The kings anticipated a righteous ruler, while the prophets pointed toward the final and perfect revelation of God. Hebrews 10:1 explains that the law was only “a shadow of the good things that are coming” and could never fully perfect those who draw near to worship. The Old Testament therefore unfolds as one redemptive story leading ultimately to Christ.
The manner in which the Savior comes is also central to understanding why Jesus alone can save. Scripture teaches that sin entered the world through Adam, and death spread to all humanity because all sinned in him. Every person born under Adamic headship stands guilty before God. Because of this, salvation cannot come through another fallen representative. The Savior must be holy and free from original sin. Christ was therefore conceived by the Holy Spirit and came as the Second Adam, succeeding where the first Adam failed. In the wilderness temptation, Jesus faced Satan directly yet remained perfectly obedient. Hebrews 4:15 declares that He was tempted in every way as we are, yet without sin. Because He alone lived without sin, He alone could stand as the perfect representative for sinners. Second Corinthians 5:21 states that God made Him who had no sin to be sin for us.
The identity of Jesus is therefore at the heart of the Christian faith. In Matthew 16, Jesus asked His disciples, “Who do people say the Son of Man is?” Peter answered, “You are the Messiah, the Son of the living God.” Jesus affirmed that this confession was revealed by the Father Himself. Immediately after this confession, Jesus began teaching His disciples that He must suffer, be killed, and rise again on the third day. His identity and His saving work cannot be separated. The One who would die and rise again is none other than the Messiah and Son of God.
Christian theology has consistently affirmed both the full humanity and the full divinity of Jesus Christ. The full humanity of Jesus is essential because salvation required a true human representative. Early false teachings such as Docetism claimed that Jesus only appeared to have a physical body. Such a view would undermine the reality of His suffering, crucifixion, and atonement. Scripture repeatedly emphasizes His genuine humanity. First Timothy 2:5 describes Him as “the man Christ Jesus,” the one mediator between God and mankind. John 1:14 declares that “the Word became flesh and made his dwelling among us.” Hebrews 2:14 explains that Christ shared in humanity’s flesh and blood so that through death He might destroy the power of death. After His resurrection, Jesus invited His disciples to touch Him, saying that a ghost does not have flesh and bones as He does. The Son of God truly became man.
At the same time, Scripture equally affirms the full divinity of Jesus. Another early heresy, Arianism, taught that Jesus was a created being rather than eternally God. The New Testament, however, presents Jesus as fully divine. He bears titles and attributes belonging only to God. In Revelation 1:17, Jesus calls Himself “the First and the Last.” Titus 2:13 refers to Him as “our great God and Savior, Jesus Christ.” Hebrews 1:3 declares that the Son is “the radiance of God’s glory and the exact representation of his being,” sustaining all things by His powerful word. Jesus demonstrates divine omniscience by knowing all people, divine omnipresence by promising to be with His people always, and divine eternity through His pre-existence before creation. He also receives worship, something reserved for God alone. Thomas confessed to the risen Christ, “My Lord and my God,” and the disciples worshiped Him after His resurrection.
The church has historically described this truth through the doctrine of the hypostatic union: Jesus Christ is one person with two complete natures, fully God and fully man. These two natures are neither mixed nor divided. As fully man, Jesus represents humanity, obeys perfectly, and dies physically for sin. As fully God, His atoning work possesses infinite worth, He fully bears divine wrath, and He conquers death itself. Only such a Savior can accomplish redemption.
The uniqueness of Jesus is therefore not based merely on moral teaching or religious influence, but on who He is and what He accomplished. Humanity’s problem is sin before a holy God, and only the God-Man can reconcile sinners to God. The entire storyline of Scripture — from the promise in Genesis, through the shadows of the Old Testament, to the incarnation, death, and resurrection of Christ — points to this reality. Only the God-Man Jesus can redeem sinners.
