Thematic Bible: The lost sheep

Then put he forth this similitude to them, saying, "What man of you having a hundred sheep, if he lose one of them doth not leave ninety and nine in the wilderness, and go after that which is lost, until he find him? And when he hath found him, he putteth him on his shoulders with joy: read more.
And as soon as he cometh home he calleth together his lovers, and neighbours saying unto them, 'Rejoice with me, for I have found my sheep which was lost.' I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.

How think ye? If a man have a hundred sheep, and one of them should be gone astray, doth he not leave ninety and nine in the mountains, and go and seek that one which is gone astray? If it happen that he find him, verily I say unto you, He rejoiceth more of that sheep, than of the ninety and nine, which went not astray. Even so, it is not the will of your father in heaven that one of these little ones should perish.