Matthew 9:36
And when He saw the crowds He was touched with pity for them, because they were distressed and were fainting on the ground like sheep which have no shepherd.
Matthew 10:6
but, instead of that, go to the lost sheep of Israel's race.
Matthew 15:24
"I have only been sent to the lost sheep of the house of Israel," He replied.
Matthew 18:10-13
"Beware of ever despising one of these little ones, for I tell you that in Heaven their angels have continual access to my Father who is in Heaven.
Luke 15:4-7
"Which of you men, if he has a hundred sheep and has lost one of them, does not leave the ninety-nine in their pasture and go in search of the lost one till he finds it?
1 Peter 2:25
For you were straying like lost sheep, but now you have come back to the Shepherd and Protector of your souls.