Matthew 1:18-21

18This is how the birth of Jesus Christ came about: His mother Mary was pledged in marriage to Joseph, but before they came together, she was found to be with child through the Holy Spirit. 19Because Joseph her husband was a righteous man and was unwilling to disgrace her publicly, he resolved to divorce her quietly.

20But after he had pondered these things, an angel of the Lord appeared to him in a dream and said, “Joseph, son of David, do not be afraid to embrace Mary as your wife, for the One conceived in her is from the Holy Spirit. 21She will give birth to a Son, and you are to give Him the name Jesus,1 because He will save His people from their sins.”