Greek Expositor (anonymous) — as excerpted in the Catena Aurea on Luke 2:8-12

“(Geometer) He marks the time of our Lord’s nativity, when he says, To-day, and the place when he adds, In the city of David; and the signs thereof when it follows, And there shall be a sign, &c. Now the Angels bring tidings to the shepherds of the Chief Shepherd, as of a lamb discovered and brought up in a cave.”