Luke 1:38
 The angel answered, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you. So the holy one to be born will be called the Son of God. Even Elizabeth your relative is going to have a child in her old age, and she who was said to be barren is in her sixth month. For nothing is impossible with God.” “I am the Lord’s servant,” Mary answered. “May it be to me as you have said.” Then the angel left her.

Gabriel explained how Mary would become pregnant and yet remain a virgin. The Holy Spirit will come upon you, and the power of the Most High will overshadow you; these words picture the powerful presence of God. The same word is used in the Transfiguration accounts to describe the overshadowing cloud, (Matthew 17:5; Mark 9:7).

This would be a special baby, for He will be holy. Jesus was born without the sin that had entered the world through Adam. He was born holy, just as Adam had been created sinless. We must be careful not to explain that Jesus was sinless simply because he did not have a human father. To do so would mean Mary would have been sinless, which she was not.

Jesus’ sinlessness rests not on His miraculous birth to a virgin girl but on the basis of His position with God. Through the birth of Jesus, God Himself entered the world in human form. This is the miracle! In 1:32, the angel said Jesus would be called “the Son of the Highest”; here he adds that he will be called the Son of God. This passage is important to the theology of who Jesus was.

The title “Son of God” shows He has a special role in God’s purpose and He is the true Son of David, the expected Messiah. The mention of the Holy Spirit gives the name greater significance, showing God, through the Spirit, has a special role in creating this child.

The connection of “Son of God” to Son of the Most High states Jesus’ divinity.

In contrast to Adam, who disobeyed God, Jesus would completely obey His Father, enabling him to face sin’s consequences in sinners’ place and make them, sinners, acceptable to God (Romans 5:14-19). This Son would be born totally because of God’s initiative and by His grace. Jesus came as a gift from God.

If Jesus Christ were not true God, how could He help us?

If He is not true man, how could He help us?