Matthew 10:6
but go ye rather to the lost sheep of the house of Israel.
Matthew 15:24
But He, answering, said, "I was not sent, except to the lost sheep of the house of Israel."
Matthew 18:12-13
"What think ye? If a hundred sheep belong to a certain man, and one of them goes astray, will he not leave the ninety and nine on the mountains, and, going, seek the straying one?
Luke 10:31-32
And by chance, a certain priest was going down that way; and, seeing him, he passed by on the opposite side.
Luke 15:4-6
"What man of you, having a hundred sheep, and losing one of them, does not leave behind the ninety and nine in the wilderness, and go after the lost one, until he finds it?
James 5:19-20
My brethren, if anyone among you be led astray from the truth, and one convert him;
1 Peter 2:25
For, as sheep, ye were going astray; but now ye returned to the Shepherd and Overseer of your souls.