2 Peter 1:9

for he with whom these things are not present is blind, short-sighted, and has forgotten the purging of his former sins.

Ephesians 5:26

in order that he might sanctify it, purifying it by the washing of water by the word,

Hebrews 9:14

how much rather shall the blood of the Christ, who by the eternal Spirit offered himself spotless to God, purify your conscience from dead works to worship the living God?

1 John 1:7

But if we walk in the light as he is in the light, we have fellowship with one another, and the blood of Jesus Christ his Son cleanses us from all sin.

1 John 2:9-11

He who says he is in the light, and hates his brother, is in the darkness until now.

Mark 10:21

And Jesus looking upon him loved him, and said to him, One thing lackest thou: go, sell whatever thou hast and give to the poor, and thou shalt have treasure in heaven; and come, follow me, taking up the cross.

Luke 18:22

And when Jesus had heard this, he said to him, One thing is lacking to thee yet: Sell all that thou hast and distribute to the poor, and thou shalt have treasure in the heavens, and come, follow me.

John 9:40-41

And some of the Pharisees who were with him heard these things, and they said to him, Are we blind also?

Romans 6:1-4

What then shall we say? Should we continue in sin that grace may abound?

Romans 6:11

So also ye, reckon yourselves dead to sin and alive to God in Christ Jesus.

2 Corinthians 4:3-4

But if also our gospel is veiled, it is veiled in those that are lost;

Galatians 5:6

For in Christ Jesus neither circumcision has any force, nor uncircumcision; but faith working through love.

Galatians 5:13

For ye have been called to liberty, brethren; only do not turn liberty into an opportunity to the flesh, but by love serve one another.

Titus 2:14

who gave himself for us, that he might redeem us from all lawlessness, and purify to himself a peculiar people, zealous for good works.

James 2:14-26

What is the profit, my brethren, if any one say he have faith, but have not works? can faith save him?

1 Peter 3:21

which figure also now saves you, even baptism, not a putting away of the filth of flesh, but the demand as before God of a good conscience, by the resurrection of Jesus Christ,

2 Peter 1:4-7

through which he has given to us the greatest and precious promises, that through these ye may become partakers of the divine nature, having escaped the corruption that is in the world through lust.

2 Peter 2:18-20

For while speaking great highflown words of vanity, they allure with the lusts of the flesh, by dissoluteness, those who have just fled those who walk in error,

Revelation 3:17

Because thou sayest, I am rich, and am grown rich, and have need of nothing, and knowest not that thou art the wretched and the miserable, and poor, and blind, and naked;

Treasury of Scripture Knowledge

Summary

But he that lacketh these things is blind, and cannot see afar off, and hath forgotten that he was purged from his old sins.

Bible References

Lacketh

2 Peter 1:5
But for this very reason also, using therewith all diligence, in your faith have also virtue, in virtue knowledge,
Mark 10:21
And Jesus looking upon him loved him, and said to him, One thing lackest thou: go, sell whatever thou hast and give to the poor, and thou shalt have treasure in heaven; and come, follow me, taking up the cross.
Luke 18:22
And when Jesus had heard this, he said to him, One thing is lacking to thee yet: Sell all that thou hast and distribute to the poor, and thou shalt have treasure in the heavens, and come, follow me.
Galatians 5:6
For in Christ Jesus neither circumcision has any force, nor uncircumcision; but faith working through love.
James 2:14
What is the profit, my brethren, if any one say he have faith, but have not works? can faith save him?

Blind

John 9:40
And some of the Pharisees who were with him heard these things, and they said to him, Are we blind also?
2 Corinthians 4:3
But if also our gospel is veiled, it is veiled in those that are lost;
1 John 2:9
He who says he is in the light, and hates his brother, is in the darkness until now.
Revelation 3:17
Because thou sayest, I am rich, and am grown rich, and have need of nothing, and knowest not that thou art the wretched and the miserable, and poor, and blind, and naked;

That he

2 Peter 1:4
through which he has given to us the greatest and precious promises, that through these ye may become partakers of the divine nature, having escaped the corruption that is in the world through lust.
2 Peter 2:18
For while speaking great highflown words of vanity, they allure with the lusts of the flesh, by dissoluteness, those who have just fled those who walk in error,
Romans 6:1
What then shall we say? Should we continue in sin that grace may abound?
Ephesians 5:26
in order that he might sanctify it, purifying it by the washing of water by the word,
Hebrews 9:14
how much rather shall the blood of the Christ, who by the eternal Spirit offered himself spotless to God, purify your conscience from dead works to worship the living God?
1 Peter 3:21
which figure also now saves you, even baptism, not a putting away of the filth of flesh, but the demand as before God of a good conscience, by the resurrection of Jesus Christ,
1 John 1:7
But if we walk in the light as he is in the light, we have fellowship with one another, and the blood of Jesus Christ his Son cleanses us from all sin.

General references

Deuteronomy 6:17
Ye shall diligently keep the commandments of Jehovah your God, and his testimonies, and his statutes, which he hath commanded thee.
Ecclesiastes 10:18
By much sloth fulness the framework falleth in; and through idleness of the hands the house drippeth.
Luke 11:35
See therefore that the light which is in thee be not darkness.