1:20 The conception and birth of Jesus Christ are supernatural events beyond human logic or reasoning. Because of this, God sent angels to help certain people understand the significance of what was happening (see 2:13, 19; Luke 1:11, 26; 2:9).
Angels are spiritual beings created by God who help carry out his work on earth. They bring God's messages to people (Luke 1:26), protect God's people (Daniel 6:22), offer encouragement (Genesis 16:7), give guidance (Exodus 14:19), carry out punishment (2 Samuel 24:16), patrol the earth (Zechariah 1:9-14), and fight the forces of evil (2 Kings 6:16-18; Revelation 20:1, 2). There are both good and bad angels (Revelation 12:7), but because bad angels are allied with the devil, or Satan, they have considerably less power and authority than good angels. Eventually the main role of angels will be to offer continuous praise to God (Revelation 7:11, 12).
1:20-23 The angel declared to Joseph that Mary's child was conceived by the Holy Spirit and would be a son. This reveals an important truth about Jesus-he is both God and human. The infinite, unlimited God took on the limitations of humanity so he could live and die for the salvation of all who would believe in him.
1:21 Jesus means "the LORD saves." Jesus came to earth to save us because we can't save ourselves from sin and its consequences. No matter how good we are, we can't eliminate the sinful nature present in all of us. Only Jesus can do that. Jesus didn't come to help people save themselves; he came to be their Savior from the power and penalty of sin. Thank Christ for his death on the cross for your sin, and then ask him to take control of your life. Your new life begins at that moment.
1:23 Jesus was to be called Immanuel ("God with us"), as predicted by Isaiah the prophet (Isaiah 7:14). Jesus was God in the flesh; thus God was literally among us, "with us." Through the Holy Spirit, Christ is present today in the life of every believer. Perhaps not even Isaiah understood how far-reaching the meaning of "Immanuel" would be.