Isaiah 8:20

If any man want light, let him look upon the law and the testimony whether they speak not after this meaning.

Micah 3:6

Therefore your vision shall be turned to night, and your prophesying to darkness. The Sun shall go down over those prophets, and the day shall be dark unto them.

2 Peter 1:19

We have also a right sure word of prophecy, whereunto if ye take heed, as unto a light that shineth in a dark place, ye do well; until the day dawn and the day star arise in your hearts.

Isaiah 8:16

Now lay the witnesses together and seal the law with my disciples.

Psalm 19:7-8

The law of the LORD is an undefiled law, converting the soul; the testimony of the LORD is sure, and giveth wisdom unto simple.

Psalm 119:130

When thy word goeth forth, it giveth light and understanding unto the simple.

Proverbs 4:18

The path of the righteous shineth as the light, and is ever brighter and brighter unto the perfect day.

Isaiah 1:10

Hear the word of the LORD, ye tyrants of Sodom, and hearken unto the law of our God, thou people of Gomorrah.

Isaiah 30:8-11

Now therefore, go thy way; and write them this before them in a table, and note it in a book: that it may finally remain and be kept still forever.

Jeremiah 8:9

therefore shall the wise be confounded. They shall be afraid and taken, for lo, they have cast out the word of the LORD: what wisdom can then be among them?

Hosea 6:3

Then shall we have understanding, and endeavor ourselves to know the LORD. He shall go forth as the spring of the day, and come unto us as the evening and morning rain upon the earth."

Malachi 4:2

But unto you that fear my name, shall the Son of righteousness arise, and health shall be under his wings: ye shall go forth, and multiply as the fat calves.

Matthew 6:23

But and if thine eye be wicked, then all thy body shall be full of darkness. Wherefore if the light that is in thee, be darkness: how great is that darkness?

Matthew 22:29

Jesus answered and said unto them, "Ye are deceived, and understand not what the scripture meaneth, nor yet the power of God.

Mark 7:7-9

In vain they worship me, teaching doctrines which are nothing but the commandments of men,

Luke 10:26

He said unto him, "What is written in the law? How readest thou?"

Luke 16:29-31

Abraham said unto him, 'They have Moses and the prophets: let them hear them.'

John 5:39

Search the scriptures: for in them, ye think ye have eternal life; and they are they which testify of me.

John 5:46-47

For had ye believed Moses, ye would have believed me: For he wrote of me.

Acts 17:11

These were the noblest of birth among them of Thessalonica, which received the word with all diligence of mind, and searched the scriptures daily whether those things were even so.

Romans 1:22

When they counted themselves wise, they became fools

Galatians 3:8-29

For the scripture saw aforehand, that God would justify the heathen through faith, and therefore showed beforehand glad tidings unto Abraham: "In thee shall all nations be blessed."

Galatians 4:21-22

Tell me, ye that desire to be under the law: have ye not heard of the law?

2 Timothy 3:15-17

And forasmuch also as thou hast known holy scripture of a child, which is able to make thee wise unto salvation through the faith, which is in Christ Jesus.

2 Peter 1:9

But he that lacketh these things is blind and gropeth for the way with his hand, and hath forgotten that he was purged from his old 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 therefore, go thy way; and write them this before them in a table, and note it in a book: that it may finally remain and be kept still forever.
Psalm 19:7
The law of the LORD is an undefiled law, converting the soul; the testimony of the LORD is sure, and giveth wisdom unto simple.
Psalm 119:130
When thy word goeth forth, it giveth light and understanding unto the simple.
Jeremiah 8:9
therefore shall the wise be confounded. They shall be afraid and taken, for lo, they have cast out the word of the LORD: what wisdom can then be among them?
Micah 3:6
Therefore your vision shall be turned to night, and your prophesying to darkness. The Sun shall go down over those prophets, and the day shall be dark unto them.
Matthew 6:23
But and if thine eye be wicked, then all thy body shall be full of darkness. Wherefore if the light that is in thee, be darkness: how great is that darkness?
Matthew 22:29
Jesus answered and said unto them, "Ye are deceived, and understand not what the scripture meaneth, nor yet the power of God.
Mark 7:7
In vain they worship me, teaching doctrines which are nothing but the commandments of men,
Romans 1:22
When they counted themselves wise, they became fools
2 Peter 1:9
But he that lacketh these things is blind and gropeth for the way with his hand, and hath forgotten that he was purged from his old sins.

Light

Proverbs 4:18
The path of the righteous shineth as the light, and is ever brighter and brighter unto the perfect day.
Hosea 6:3
Then shall we have understanding, and endeavor ourselves to know the LORD. He shall go forth as the spring of the day, and come unto us as the evening and morning rain upon the earth."
Malachi 4:2
But unto you that fear my name, shall the Son of righteousness arise, and health shall be under his wings: ye shall go forth, and multiply as the fat calves.
2 Peter 1:19
We have also a right sure word of prophecy, whereunto if ye take heed, as unto a light that shineth in a dark place, ye do well; until the day dawn and the day star arise in your hearts.

General references

Numbers 8:2
"Speak unto Aaron and say unto him, 'When thou puttest on the lamps see that they light all seven upon the forefront of the candlestick.'"
Micah 5:12
All witchcrafts will I root out of thine hand, there shall no more soothsayings be within thee.
Matthew 14:4
For John said unto him, "It is not lawful for thee to have her."
Luke 10:26
He said unto him, "What is written in the law? How readest thou?"