Matthew 18:12-14
What think you? If a man owns a hundred sheep, and one of them strays, will he not leave the ninety-nine on the hills, and go and search for the one that is straying?
Luke 15:4
"What man among you who has a hundred sheep, and has lost one of them, does not leave the ninety-nine out in the open country, and go after the lost sheep till he finds it?
John 6:37
All those whom the Father gives me will come to me; and no one who comes to me will I ever turn away.
John 10:16
I have other sheep besides, which do not belong to this fold; I must lead them also, and they will listen to my voice; and they shall become one flock under 'one Shepherd.'