Luke 15:4

Irenaeus Against Heresies Book I

Moreover, that Achamoth wandered beyond the Pleroma, and received form from Christ, and was sought after by the Saviour, they declare that He indicated when He said, that He had come after that sheep which was gone astray.[112]

Irenaeus Against Heresies Book I

Blending in one the production of their own Aeons, and the straying and recovery of the sheep [spoken of in the Gospel[210]

Irenaeus Against Heresies Book III

All therefore speak falsely who disallow his (Adam's) salvation, shutting themselves out from life for ever, in that they do not believe that the sheep which had perished has been found.[465]

Hippolytus Refutation of All Heresies Book VI

And for this reason (they maintain) that when an error had arisen respecting the twelfth number, the sheep skipped from the flock and wandered away;[161]

Constitutions of the Holy Apostles Book II

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."[111]