Matthew 18:12-14
What think ye? if any man had an hundred sheep, and one of them should go astray, would he not leave the ninety and nine, and go upon the hills, and seek that which is gone astray?
Luke 15:4
saying, What man of you that hath an hundred sheep, and loseth one of them, doth not leave the ninety-nine in the field, and go after that which was lost, till he find it?
John 6:37
All that the Father giveth me, will come unto me; and him that cometh to me I will not cast out.
John 10:16
And I have other sheep, which are not of this fold: them also I must bring, and they will hear my voice; so there shall be one fold, and one shepherd.