Isaiah 8:20

[Seek] to the law and to the testimony! If they speak not according to this word, surely there is no morning for them.

Micah 3:6

Therefore it shall be night to you, that ye shall have no vision. And it shall be dark to you, that ye shall not divine. And the sun shall go down upon the prophets, and the day shall be black over them.

2 Peter 1:19

And we have the prophetic word sure, to which ye do well giving heed, as to a lamp shining in a dark place, until the day dawns, and the daystar arises in your hearts.

Isaiah 8:16

Bind thou up the testimony. Seal the law among my disciples.

Psalm 19:7-8

The law of LORD is perfect, restoring the soul. The testimony of LORD is sure, making a simple man wise.

Psalm 119:130

The opening of thy words gives light. It gives understanding to the simple.

Proverbs 4:18

But the path of the righteous is as the dawning light, that shines more and more to the perfect day.

Isaiah 1:10

Hear the word of LORD, ye rulers of Sodom, give ear to the law of our God, ye people of Gomorrah.

Isaiah 30:8-11

Now go, write it before them on a tablet, and inscribe it on a scroll, that it may be for the time to come forever and ever.

Jeremiah 8:9

The wise men are put to shame. They are dismayed and taken. Lo, they have rejected the word of LORD, and what manner of wisdom is in them?

Hosea 6:3

And let us know, let us follow on to know LORD. His going forth is sure as the morning, and he will come to us as the rain, as the latter rain that waters the earth.

Malachi 4:2

But to you who fear my name the sun of righteousness shall arise with healing in its wings, and ye shall go forth, and frolic as calves of the stall.

Matthew 6:23

But if thine eye is bad, thy whole body will be dark. If therefore the light that is in thee is darkness, how great is the darkness!

Matthew 22:29

But having answered, Jesus said to them, Ye are led astray, not knowing the scriptures, nor the power of God.

Mark 7:7-9

But in vain they worship me, teaching as doctrines the commandments of men.

Luke 10:26

And he said to him, What is written in the law? How read thou?

Luke 16:29-31

But Abraham says to him, They have Moses and the prophets. Let them hear them.

John 5:39

Ye search the scriptures, because ye think to have eternal life in them, and those are testifying about me.

John 5:46-47

For if ye believed Moses, ye would have believed me, for that man wrote about me.

Acts 17:11

But these were more noble than those in Thessalonica, who received the word with all willingness, examining the Scriptures daily, if it has these things this way.

Romans 1:22

Professing to be wise, they became foolish,

Galatians 3:8-29

And the scripture having foreseen that God makes the Gentiles righteous from faith, proclaimed the good-news in advance to Abraham: In thee all the nations will be blessed.

Galatians 4:21-22

Tell me those desiring to be under law, do ye not hear the law?

2 Timothy 3:15-17

And that from a babe thou have known the sacred writings, which are able to make thee wise for salvation through faith in Christ Jesus.

2 Peter 1:9

For he in whom these things are not present is blind, being near-sighted, having deliberately forgotten the purification of his former sins.

Treasury of Scripture Knowledge

Summary

To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.

Bible References

It is

Isaiah 30:8
Now go, write it before them on a tablet, and inscribe it on a scroll, that it may be for the time to come forever and ever.
Psalm 19:7
The law of LORD is perfect, restoring the soul. The testimony of LORD is sure, making a simple man wise.
Psalm 119:130
The opening of thy words gives light. It gives understanding to the simple.
Jeremiah 8:9
The wise men are put to shame. They are dismayed and taken. Lo, they have rejected the word of LORD, and what manner of wisdom is in them?
Micah 3:6
Therefore it shall be night to you, that ye shall have no vision. And it shall be dark to you, that ye shall not divine. And the sun shall go down upon the prophets, and the day shall be black over them.
Matthew 6:23
But if thine eye is bad, thy whole body will be dark. If therefore the light that is in thee is darkness, how great is the darkness!
Matthew 22:29
But having answered, Jesus said to them, Ye are led astray, not knowing the scriptures, nor the power of God.
Mark 7:7
But in vain they worship me, teaching as doctrines the commandments of men.
Romans 1:22
Professing to be wise, they became foolish,
2 Peter 1:9
For he in whom these things are not present is blind, being near-sighted, having deliberately forgotten the purification of his former sins.

Light

Proverbs 4:18
But the path of the righteous is as the dawning light, that shines more and more to the perfect day.
Hosea 6:3
And let us know, let us follow on to know LORD. His going forth is sure as the morning, and he will come to us as the rain, as the latter rain that waters the earth.
Malachi 4:2
But to you who fear my name the sun of righteousness shall arise with healing in its wings, and ye shall go forth, and frolic as calves of the stall.
2 Peter 1:19
And we have the prophetic word sure, to which ye do well giving heed, as to a lamp shining in a dark place, until the day dawns, and the daystar arises in your hearts.

General references

Numbers 8:2
Speak to Aaron, and say to him, When thou light the lamps, the seven lamps shall give light in front of the candlestick.
Micah 5:12
And I will cut off witchcrafts out of thy hand, and thou shall have no [more] soothsayers.
Matthew 14:4
For John said to him, It is not permitted for thee to have her.
Luke 10:26
And he said to him, What is written in the law? How read thou?