luke 2:11 For unto you is born this day in the city of David a Saviour, which is Christ the Lord. - Free Bible Online

      11. unto you is born--you shepherds, Israel, mankind [BENGEL]. Compare Isa 9:6, "Unto us a Child is born." It is a birth--"The Word is made flesh" (Joh 1:14). When? "This day." Where? "In the city of David"--in the right line and at the right "spot"; where prophecy bade us look for Him, and faith accordingly expected Him. How dear to us should be these historic moorings of our faith! With the loss of them, all substantial Christianity is lost. By means of them how many have been kept from making shipwreck, and attained to a certain external admiration of Him, ere yet they have fully "beheld His glory."
      a Saviour--not One who shall be a Saviour, but "born a Saviour."
      Christ the Lord--"magnificent appellation!" [BENGEL]. "This is the only place where these words come together; and I see no way of understanding this "Lord" but as corresponding to the Hebrew JEHOVAH" [ALFORD].

JFB.