In the gospel of Mathew, the angel tells Joseph that Mary's child is conceived of the Holy Spirit, and that He is "to give him the name Jesus, because He will save his people from their sins" (Mathew 1:21-23). So, according to the New Testament’s revelation, Jesus came to save us from our sins and not just to forgive our sins. Salvation is described as the mystery of God that is now revealed “…. and to make all see what is the fellowship of the mystery, which from the beginning of the ages has been hidden in God who created all things through Jesus Christ” (Ephesians 3:9). A plan conceived before the foundations of the world “Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will” (EPHESIANS 1:3-6), a transition from death to life “Most assuredly, I say to you, he who hears My word and believes in Him who sent Me has everlasting life, and shall not come into judgment, but has passed from death into life.”(JOHN 5:24). It is a gift of grace through faith, not our works. Forgiveness of sin will not set us free because the root of evil is still deep inside, and Satan's bondage and servitude to man still exist. Repentance alone will not save man, and it is of limited use for humankind because it does not call man back from his nature. If transgressions alone were the human problem, repentance would be the solution. But man was perishing in corruption due to his natural propensity to return to his source, nothingness. Repentance cannot help here since it cannot bring man from corruption to incorruption. The Incarnation of the Word of God was the only fitting solution. How else would the knowledge of God be restored in man? The Image of God in man needed renewal.
Being created only according to the Divine Image, man could not do it himself. Only the Divine Image Himself incarnate could renew the Image of God in man and ends mankind’s corruption, and bring a truly happy life. The Word of God came in His own Person, because it was He alone, the Image of the Father Who could recreate man- made after the Image. But for this to be possible, the tyranny of death and corruption over mankind had to be broken. For this reason, Jesus Christ, the Image of the Father, took a human body as an instrument that in its death might be overthrown, man freed and renewed after the Divine Image. So we all are called to live in unity with Jesus Christ, our Lord and Savior who in him we can attain our salvation and freedom.
The purpose of the Son of Man's coming is to seek out and save the lost “for the Son of Man has come to seek and to save that which was lost.” (Luke 19:10). Salvation is a spiritual birth, a birth from above without which one cannot enter the kingdom of heaven “Most assuredly, I say to you, unless one is born again, he cannot see the kingdom of God.” (John 3:1-11). So Salvation is the freedom of the grip of sin and death and the renewal and change of the human nature. It is the unity with the life of the Incarnate Son Jesus Christ.