Matthew 9:36
And when he saw the multitudes, he was moved with compassion for them, because they were troubled and scattered as sheep that had no shepherd.
Matthew 10:6
But go rather to the lost sheep of the house of Israel.
Matthew 15:24
But he answered and said: I am not sent but to the lost sheep of the house of Israel.
Matthew 18:10-13
Take heed that you despise not one of these little ones: for I say to you, That their angels in heaven do always behold the face of my Father who is in heaven.
Luke 15:4-7
What man of you that has a hundred sheep, and loses one of them, does not leave the ninety-nine in the desert, and go after that which is lost, till he find it?
1 Peter 2:25
For you were like sheep that had gone astray; but now you have returned to the shepherd and bishop of your souls.