Matthew 10:6

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

Matthew 15:24

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

Matthew 18:12-13

What think ye? if a man have a hundred sheep, and one of them hath gone astray, doth he not leave the ninetynine upon the mountains, and go and seek that which hath gone astray?

Luke 15:4-7

What man of you having a hundred sheep, if he lose one of them, doth not leave the ninetynine in the wilderness, and go after that which is lost, until he findeth it?

Luke 19:10

for the Son of man came to seek and to save that which was lost.

John 10:16

And other sheep I have, which are not of this fold; them also I must bring; and they will hear my voice, and there will be one flock, one shepherd.

Galatians 4:9

but now, after having known God, or rather having been known by God, how is it that ye are turning back to the weak and beggarly rudiments to which ye wish to be again in bondage?

Philippians 2:13

for it is God who worketh in you both to will and to work for his good pleasure.

James 1:17

Every good gift and every perfect gift is from above, coming down from the Father of the lights, with whom is no change, nor shadow from turning.

1 Peter 2:25

For ye were going astray like sheep; but ye have now returned to the Shepherd and Bishop 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 go rather to the lost sheep of the house of Israel.
Matthew 15:24
But he answered and said, I was not sent except to the lost sheep of the house of Israel.
Matthew 18:12
What think ye? if a man have a hundred sheep, and one of them hath gone astray, doth he not leave the ninetynine upon the mountains, and go and seek that which hath gone astray?
Luke 15:4
What man of you having a hundred sheep, if he lose one of them, doth not leave the ninetynine in the wilderness, and go after that which is lost, until he findeth it?
John 10:16
And other sheep I have, which are not of this fold; them also I must bring; and they will hear my voice, and there will be one flock, one shepherd.
1 Peter 2:25
For ye were going astray like sheep; but ye have now returned to the Shepherd and Bishop of your souls.

Seek

Luke 19:10
for the Son of man came to seek and to save that which was lost.
Galatians 4:9
but now, after having known God, or rather having been known by God, how is it that ye are turning back to the weak and beggarly rudiments to which ye wish to be again in bondage?
Philippians 2:13
for it is God who worketh in you both to will and to work for his good pleasure.
James 1:17
Every good gift and every perfect gift is from above, coming down from the Father of the lights, with whom is no change, nor shadow from turning.