Matthew 10:6

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

Matthew 15:24

But he answered and said, I am sent only to the lost sheep of the house of Israel.

Matthew 18:12-13

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 15:4-7

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?

Luke 19:10

For the Son of man is come to seek and to save that which was lost.

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.

Galatians 4:9

But now that ye know God, or rather are known by God, how is it that ye turn again to the poor weak elements, to which ye desire again to be in bondage as before?

Philippians 2:13

for it is God that worketh in you both to will, and to work, out of his own good-pleasure.

James 1:17

and every perfect gift, but no evil one, is from above, and cometh down from the Father of lights, with whom there is no variation, nor shadow of turning:

1 Peter 2:25

For ye were as sheep going astray; but are now turned unto 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 to the lost sheep of the house of Israel.
Matthew 15:24
But he answered and said, I am sent only to the lost sheep of the house of Israel.
Matthew 18:12
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 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.
1 Peter 2:25
For ye were as sheep going astray; but are now turned unto the shepherd and bishop of your souls.

Seek

Luke 19:10
For the Son of man is come to seek and to save that which was lost.
Galatians 4:9
But now that ye know God, or rather are known by God, how is it that ye turn again to the poor weak elements, to which ye desire again to be in bondage as before?
Philippians 2:13
for it is God that worketh in you both to will, and to work, out of his own good-pleasure.
James 1:17
and every perfect gift, but no evil one, is from above, and cometh down from the Father of lights, with whom there is no variation, nor shadow of turning: