2 Peter 1:9

For [the one] for whom these [things] [are] not present is blind, being nearsighted, {having forgotten the cleansing} of his former sins.

Ephesians 5:26

in order that he might sanctify her by cleansing [her] with the washing of water by the word;

Hebrews 9:14

how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, cleanse our consciences from dead works to serve [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 his Son cleanses us from all sin.

1 John 2:9-11

The one who says [he] is in the light and hates his brother is in the darkness until now.

Mark 10:21

And Jesus, looking at him, loved him, and said to him, "You lack one [thing]: Go, sell all that you have, and give [the proceeds] to the poor--and you will have treasure in heaven--and come, follow me."

Luke 18:22

And [when he] heard [this], Jesus said to him, "{You still lack one thing}: Sell all that you have, and distribute [the proceeds] to the poor--and you will have treasure in heaven--and come, follow me."

John 9:40-41

[Some] of the Pharisees who were with him heard these [things] and said to him, "We are not also blind, [are we]?"

Romans 6:1-4

What therefore shall we say? Shall we continue in sin, in order that grace may increase?

Romans 6:11

So also you, consider yourselves to be dead to sin, but alive to God in Christ Jesus.

2 Corinthians 4:3-4

But if indeed our gospel is veiled, it is veiled among those who are perishing,

Galatians 5:6

For in Christ Jesus neither circumcision counts for anything nor uncircumcision, but faith working through love.

Galatians 5:13

For you were called to freedom, brothers. Only do not let your freedom [become] an opportunity for the flesh, but through love serve one another.

Titus 2:14

who gave himself for us, in order that he might redeem us from all lawlessness and purify for himself a people for his own possession, zealous for good deeds.

James 2:14-26

What [is] the benefit, my brothers, if someone says [that he] has faith but does not have works? That faith [is] not able to save him, [is it]?

1 Peter 3:21

And also, corresponding to [this], baptism now saves you, not the removal of dirt from the flesh, but an appeal to God for a good conscience through the resurrection of Jesus Christ,

2 Peter 1:4-7

through which things he has bestowed on us his precious and very great promises, so that through these you may become sharers of the divine nature [after] escaping from the corruption [that is] in the world because of evil desire,

2 Peter 2:18-20

{For by speaking high-sounding but empty words}, they entice with desires of the flesh [and] with licentiousness those who are scarcely escaping from those who live in error,

Revelation 3:17

Because you are saying, "I am rich, and have become rich, and I have need of nothing," and you do not know that you are wretched and pitiable 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
and [for] this same [reason], and [by] applying all diligence, supply with your faith excellence of character, and with excellence of character, knowledge,
Mark 10:21
And Jesus, looking at him, loved him, and said to him, "You lack one [thing]: Go, sell all that you have, and give [the proceeds] to the poor--and you will have treasure in heaven--and come, follow me."
Luke 18:22
And [when he] heard [this], Jesus said to him, "{You still lack one thing}: Sell all that you have, and distribute [the proceeds] to the poor--and you will have treasure in heaven--and come, follow me."
Galatians 5:6
For in Christ Jesus neither circumcision counts for anything nor uncircumcision, but faith working through love.
James 2:14
What [is] the benefit, my brothers, if someone says [that he] has faith but does not have works? That faith [is] not able to save him, [is it]?

Blind

John 9:40
[Some] of the Pharisees who were with him heard these [things] and said to him, "We are not also blind, [are we]?"
2 Corinthians 4:3
But if indeed our gospel is veiled, it is veiled among those who are perishing,
1 John 2:9
The one who says [he] is in the light and hates his brother is in the darkness until now.
Revelation 3:17
Because you are saying, "I am rich, and have become rich, and I have need of nothing," and you do not know that you are wretched and pitiable and poor and blind and naked,

That he

2 Peter 1:4
through which things he has bestowed on us his precious and very great promises, so that through these you may become sharers of the divine nature [after] escaping from the corruption [that is] in the world because of evil desire,
2 Peter 2:18
{For by speaking high-sounding but empty words}, they entice with desires of the flesh [and] with licentiousness those who are scarcely escaping from those who live in error,
Romans 6:1
What therefore shall we say? Shall we continue in sin, in order that grace may increase?
Ephesians 5:26
in order that he might sanctify her by cleansing [her] with the washing of water by the word;
Hebrews 9:14
how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, cleanse our consciences from dead works to serve [the] living God?
1 Peter 3:21
And also, corresponding to [this], baptism now saves you, not the removal of dirt from the flesh, but an appeal to God for a good conscience through 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 his Son cleanses us from all sin.

General references

Deuteronomy 6:17
You shall diligently keep the commandments of Yahweh your God and his legal provisions and his rules that he has commanded you.
Ecclesiastes 10:18
Through sloth the roof sinks in, and through idleness of hands the house leaks.
Luke 11:35
Therefore pay careful attention [that] the light in you is not darkness!