Matthew 1:20-21

20But after he had considered this, an angel of the Lord appeared to him in a dream and said, “Joseph son of David, do not be afraid to take Mary home as your wife, because what is conceived in her is from the Holy Spirit.

21She will give birth to a son, and you are to give him the name Jesus, Jesus is the Greek form of Joshua, which means the Lord saves. because he will save his people from their sins.”