Luke 11:34

Your eye is the lamp of your body. When your eye is good, your whole body also is full of light. But when it is bad, your body also is full of darkness.

Matthew 6:22-23

The lamp of the body is the eye. So if your eye is good, your whole body will be full of light.

Mark 4:12

so that 'seeing they may see but not perceive, and hearing may hear but not understand; lest they should turn again, and be forgiven.'"

Mark 7:22

coveting, wickedness, deceit, lewdness, envy, slander, pride, foolishness.

Mark 8:18

Having eyes do you not see, and having ears do you not hear? And do you not remember?

Acts 2:46

And day by day, attending the temple together and breaking bread in their homes, they ate together with glad and sincere hearts,

Acts 13:11

Now, behold, the hand of the Lord is upon you, and you will be blind and unable to see the sun for a time." And immediately a mist and a darkness fell upon him, and he went about seeking someone to lead him by the hand.

Acts 26:18

to open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness of sins and a place among those who are sanctified by faith in me.'

Romans 11:8-10

as it is written: "God gave them a spirit of stupor, eyes that they should not see and ears that they should not hear, down to this very day."

2 Corinthians 1:12

For our boast is this: the testimony of our conscience, that with holiness and godly sincerity, not in worldly wisdom but in the grace of God, we have conducted ourselves in the world, and still more toward you.

2 Corinthians 4:4

In their case the god of this world has blinded the minds of the unbelievers, so that they might not see the light of the gospel of the glory of Christ, who is the image of God.

2 Corinthians 11:3

But I am afraid that just as the serpent deceived Eve by his cunning, your minds may somehow be led astray from your sincere and pure devotion to Christ.

Ephesians 1:17

that the God of our Lord Jesus Christ, the Father of glory, may give to you a spirit of wisdom and of revelation in the knowledge of him.

Ephesians 6:5

Slaves, be obedient to those who are your masters according to the flesh, with fear and trembling, in sincerity of heart, as to Christ;

Colossians 3:22

Slaves, in everything obey those who are your masters according to the flesh, not with eye-service, as men-pleasers, but in sincerity of heart, fearing the Lord.

2 Thessalonians 2:9-12

The coming of the lawless one by the activity of Satan will be with all power and with pretended signs and wonders,

Treasury of Scripture Knowledge

Summary

The light of the body is the eye: therefore when thine eye is single, thy whole body also is full of light; but when thine eye is evil, thy body also is full of darkness.

Bible References

Light of

Matthew 6:22
The lamp of the body is the eye. So if your eye is good, your whole body will be full of light.
Mark 8:18
Having eyes do you not see, and having ears do you not hear? And do you not remember?
Acts 26:18
to open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness of sins and a place among those who are sanctified by faith in me.'
Ephesians 1:17
that the God of our Lord Jesus Christ, the Father of glory, may give to you a spirit of wisdom and of revelation in the knowledge of him.

Single

Acts 2:46
And day by day, attending the temple together and breaking bread in their homes, they ate together with glad and sincere hearts,
2 Corinthians 1:12
For our boast is this: the testimony of our conscience, that with holiness and godly sincerity, not in worldly wisdom but in the grace of God, we have conducted ourselves in the world, and still more toward you.
2 Corinthians 11:3
But I am afraid that just as the serpent deceived Eve by his cunning, your minds may somehow be led astray from your sincere and pure devotion to Christ.
Ephesians 6:5
Slaves, be obedient to those who are your masters according to the flesh, with fear and trembling, in sincerity of heart, as to Christ;
Colossians 3:22
Slaves, in everything obey those who are your masters according to the flesh, not with eye-service, as men-pleasers, but in sincerity of heart, fearing the Lord.

But

Mark 4:12
so that 'seeing they may see but not perceive, and hearing may hear but not understand; lest they should turn again, and be forgiven.'"
Mark 7:22
coveting, wickedness, deceit, lewdness, envy, slander, pride, foolishness.
Acts 13:11
Now, behold, the hand of the Lord is upon you, and you will be blind and unable to see the sun for a time." And immediately a mist and a darkness fell upon him, and he went about seeking someone to lead him by the hand.
Romans 11:8
as it is written: "God gave them a spirit of stupor, eyes that they should not see and ears that they should not hear, down to this very day."
2 Corinthians 4:4
In their case the god of this world has blinded the minds of the unbelievers, so that they might not see the light of the gospel of the glory of Christ, who is the image of God.
2 Thessalonians 2:9
The coming of the lawless one by the activity of Satan will be with all power and with pretended signs and wonders,