3 Bible Verses about Lost Sheep

for you were as sheep going astray, but now you are brought back to the pastor and overseer of your souls.

I assure you, he that entreth not by the door into the sheep-fold, but climbeth up some other way, is a thief and a robber. but he that enters in by the door, is the pastor of the sheep. the porter lets him in, and the sheep know his voice: he calls his own sheep by name, and leads them out to pasture.read more.
when he lets out his own sheep, he goes before them, and the sheep follow him: because they know his voice. a stranger they will not follow, but flee from him: for they know not the voice of strangers. Jesus talk'd to them in this figurative way: but they did not understand the meaning of his discourse. Jesus therefore subjoin'd, I declare unto you, I am the door of the sheep-fold. they who have personated me, are all thieves and robbers: but the sheep did not follow them. I am the door: by me if any man enter in, he shall be saved; he shall go in and out, and find pasture. the thief comes only to steal, to kill, and destroy: but I am come that they might have life, and have it with all its advantages. I am the true pastor: the true pastor exposes his life for the sheep. but the hireling, who is not the pastor, nor has the property of the sheep, seeing the wolf come, leaves the sheep, and flies away: so the wolf seizes some, and disperses the flock. the hireling flies, because he is an hireling, and is under no concern for the sheep. I am the true pastor, I know my sheep, and my sheep know me, (as the father and I are known to one another:) and I lay down my life for them. other sheep I have, which are not of this fold: them also I must bring; they will hear my voice; and so there shall be but one fold, and one pastor. therefore doth my father love me, because I lay down my life, but I shall reassume it. no man can take it from me, but I voluntarily lay it down: I have power to lay it down, and I have power to take it again. this is the order I have received from my father. There was another schism therefore among the Jews, occasion'd by this discourse. for many of them said, he is possess'd with a demon, and is mad; why do you mind him? others said, this is not the language of one possess'd: can a demon give sight to the blind? At length the feast of the dedication was kept at Jerusalem, when the weather happen'd to be foul. as Jesus therefore was walking in the temple in Solomon's portico, the Jews came about him, and said, how long will you keep us in suspense? if you are the Messiah, tell us plainly. Jesus answered them, I told you, and ye did not believe me: the works that I do in my father's name, they testify of me. but, as I said before, you do not believe; because ye are not of my sheep. my sheep hear my voice, I know them, and they follow me.

If a man has an hundred sheep, and one of them should go astray, do you think he would not leave the ninety and nine in the mountains, and go in search for that which was gone astray?