What man of you, having a hundred sheep, if he loses one of them, does not leave the ninety and nine in the wilderness, and go after that which is lost, until he finds it?
All Commentaries on Luke 15:4 Go To Luke 15
The Apostolic Constitutions
AD 375
As the Lord God our gracious Father has sent His own Son, the good Shepherd and Saviour, our Master Jesus, and has commanded Him to "leave the ninety-nine upon the mountains, and to go in search after that which was lost, and when He had found it, to take it upon His shoulders, and to carry it into the flock, rejoicing that He had found that which was lost."