In His mercy, God promised a way of salvation from sin and death that all humans face because of our first parents, Adam and Eve. God provided a Saviour named Jesus.
Jesus, born around 4 BC, was a unique human being because of who his parents were. The Bible calls Jesus both the Son of man and the Son of God.
His human mother, Mary, made him a son of man. Mary descended from the royal family of Israel that started with King David.
His father was God, so he was the son of God. The Bible says Jesus was God’s only begotten, or born, son (1) (Mathew 3:17; John 3:16).
The name Jesus means “Saviour”. God sent an angel messenger to tell Mary (who was an unmarried virgin) that she would have a son. The power of God’s Holy Spirit acted on Mary to conceive the son (2)( Luke 1:35). Mary should call his name Jesus, since he would save his people from their sins (Matthew 1:21). The name Jesus means “God is salvation”. Note how this special purpose was decided before Jesus’s birth.
Therefore Jesus’s purpose was to save people from death—since sin causes death. Several Bible passages speak of this purpose. (3) (Hebrews 2:14) starts off saying that Jesus had flesh and blood nature—he was in the same sinful, mortal (or, dying) condition as all humans are. Hebrews then says:
“that through death he [Jesus] might destroy the one who has the power of death, that is, the devil, and deliver all those who through fear of death were subject to lifelong slavery”.
Jesus came to destroy or defeat sin, which leads to death. In other words, Jesus came to defeat the cause of death, which makes him the Saviour.