Matthew 9:36

And seeing the multitudes he had compassion on them because they were faint and scattered, like sheep without a shepherd.

Matthew 10:6

but go rather to the lost sheep of the house of Israel;

Matthew 15:24

But he answered and said, I am not sent, except to the lost sheep of the house of Israel.

Matthew 18:10-13

See that you despise not one of these little ones; for I tell you that their angels always behold the face of my Father in heaven.

Luke 15:4-7

What man of you having a hundred sheep, and losing one of them, does not leave the ninety-nine in the wilderness, and go after the lost sheep till he finds it.

1 Peter 2:25

For you were like lost sheep, but are now returned to the shepherd and bishop of your souls.

Treasury of Scripture Knowledge

Summary

My people hath been lost sheep: their shepherds have caused them to go astray, they have turned them away on the mountains: they have gone from mountain to hill, they have forgotten their restingplace.

Bible References

People

Matthew 9:36
And seeing the multitudes he had compassion on them because they were faint and scattered, like sheep without a shepherd.
Matthew 10:6
but go rather to the lost sheep of the house of Israel;
Matthew 15:24
But he answered and said, I am not sent, except to the lost sheep of the house of Israel.
Matthew 18:11
(Added verse not retained in Sawyer)
Luke 15:4
What man of you having a hundred sheep, and losing one of them, does not leave the ninety-nine in the wilderness, and go after the lost sheep till he finds it.
1 Peter 2:25
For you were like lost sheep, but are now returned to the shepherd and bishop of your souls.