18This is how the birth of Jesus Christ took place. When Mary his mother was engaged to Joseph, before they were married, she became pregnant by the Holy Spirit. 19Joseph her husband was a righteous man. Because he didn’t want to humiliate her, he decided to call off their engagement quietly. 20As he was thinking about this, an angel from the Lord appeared to him in a dream and said, "Joseph son of David, don’t be afraid to take Mary as your wife, because the child she carries was conceived by the Holy Spirit. 21She will give birth to a son, and you will call him Jesus, because he will save his people from their sins."