3 Bible Verses about Lost Sheep

For you have wandered away like sheep; but you have now turned to the Shepherd and Bishop of your souls.

Truly, truly, I say unto you, the one coming not in through the door into the fold of the sheep, but climbing up some other way, he is a thief and a robber. And the one coming in through the door is the shepherd of the sheep. To him the porter opens; and the sheep hear His voice: and he calls His own sheep by name, and leads them out.read more.
When He may put out all his own, he goes before them, and the sheep follow Him: because they know his voice: but they will not follow a stranger, but will flee from him: because they know not the voice of strangers. He spoke this parable to them: but they did not know what things He was speaking to them. Then Jesus said, Truly, truly, I say unto you, that I am the door of the sheep. All so many as came were thieves and robbers: but the sheep did not hear them. I am the door: if any one may enter in through me, he shall be saved; he shall go in and come out, and find pasture. The thief does not come, but that he may steal, and slay, and destroy: I came that they may have life, and have it more abundantly. I am the Good Shepherd. The Good Shepherd lays down His life for the sheep. The hireling, and the one not being the shepherd, whose own the sheep are not, sees the wolf coming, and leaves the sheep, and flees away, and the wolf seizes and scatters them: because he is a hireling and there is not a care to him for the sheep. I am the Good Shepherd; I know mine, and mine know me, as the Father knows Me, and I know the Father; and I lay down My soul for the sheep. And I have other sheep which are not of this fold: and it behooves me to bring them and they shall hear my voice, and there shall be one fold, and one shepherd. Therefore my Father loves Me, because I lay down my soul, that I may take it again. No one takes it from Me, but I lay it down of myself. I have power to lay it down, and power to receive it again. I received this commandment from my Father. Again there was a schism among the Jews on account of these words. Then many of them were saying, He has a demon, and is gone mad; why do you hear Him? Others were saying, These are not the words of a demonized man. Whether is a demon able to open the eyes of the blind? And it was the feast of dedication in Jerusalem: and it was winter; and Jesus was walking in the temple in Solomon's porch. Then the Jews surrounded Him, and said to Him, How long do you take away our soul? If thou art the Christ, tell us openly. Jesus responded, I told you, and you do not believe: the works which I do in the name of my Father, these testify concerning me. But you do not believe, because you are not of my sheep. My sheep hear my voice, and I know them, and they follow me:

What seems to you? if there may be a hundred sheep to one man, and one of them may go astray, does he not, leaving the ninety and nine, going to the mountains, seek that which has gone astray?