Argumentum Ad Hominem of Christ

What man of you, having an hundred sheep, if he lose one of them, doth not leave the ninety and nine in the wilderness, and go after that which is lost, until he find it?
And when he hath found it, he layeth it on his shoulders, rejoicing.
And when he cometh home, he calleth together his friends and neighbors, 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.
Luke 15:4-7

"He was seeking lost men and women, and it was for this reason that he went down among them, even among those who were most evidently lost, that he might find them. He took pains to put himself where he could come into communication with them, and he exhibited such kindliness toward them that in crowds they drew near to hear him.

Our divine Lord defended himself by what is called an argumentum ad hominem, an argument to the men themselves; for he said, "What man of you, having an hundred sheep, if he lose one of them, doth not go after that which is lost, until he find it?"

 No argument tells more powerfully upon men than one which comes close home to their own daily life, and the Savior put it so. They were silenced, if they were not convinced.

 

It was a peculiarly strong argument, because in their case it was only a sheep that they would go after, but in his case it was something infinitely more precious than all the flocks of sheep that ever fed on Sharon or Carmel; for it was the soul of man which he sought to save.

Observe here that it is a definite search. The shepherd goes after the sheep, and after nothing else; and he has the one particular sheep in his mind's eye.
Note that this is an all-absorbing search. He is thinking of nothing but his own lost sheep.
It is an active search too; for observe, he goes after that which is lost, until he finds it;
For notice the perseverance of the search: "until he find it." He does not stop till he has done the deed.
But now, see, the shepherd finds the sheep, and he lays it on his shoulders. It is an uplifting action, raising the fallen one from the earth whereon he has strayed."
Charles Spurgeon