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 18:12-13

What do you yourselves think? Suppose a man gets a hundred sheep and one of them strays away, will he not leave the ninety-nine on the hills and go and look for the one that is straying?

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?

Luke 19:10

For the Son of Man has come to seek and to save that which was lost."

John 10:16

I have also other sheep--which do not belong to this fold. Those also I must bring, and they will listen to my voice; and they shall become one flock under one Shepherd.

Galatians 4:9

Now, however, having come to know God--or rather to be known by Him--how is it you are again turning back to weak and worthless rudimentary notions to which you are once more willing to be enslaved?

Philippians 2:13

For it is God Himself whose power creates within you the desire to do His gracious will and also brings about the accomplishment of the desire.

James 1:17

Every gift which is good, and every perfect boon, is from above, and comes down from the Father, who is the source of all Light. In Him there is no variation nor the slightest suggestion of change.

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.

Treasury of Scripture Knowledge

Summary

I have gone astray like a lost sheep; seek thy servant; for I do not forget thy commandments.

Bible References

Gone astray

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 18:12
What do you yourselves think? Suppose a man gets a hundred sheep and one of them strays away, will he not leave the ninety-nine on the hills and go and look for the one that is straying?
Luke 15:4
"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?
John 10:16
I have also other sheep--which do not belong to this fold. Those also I must bring, and they will listen to my voice; and they shall become one flock under one Shepherd.
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.

Seek

Luke 19:10
For the Son of Man has come to seek and to save that which was lost."
Galatians 4:9
Now, however, having come to know God--or rather to be known by Him--how is it you are again turning back to weak and worthless rudimentary notions to which you are once more willing to be enslaved?
Philippians 2:13
For it is God Himself whose power creates within you the desire to do His gracious will and also brings about the accomplishment of the desire.
James 1:17
Every gift which is good, and every perfect boon, is from above, and comes down from the Father, who is the source of all Light. In Him there is no variation nor the slightest suggestion of change.