Isaiah 8:20

To the law and the testimony! If they speak not according to this word, for them there is no daybreak.

Micah 3:6

therefore ye shall have night without a vision; and it shall be dark unto you, without divination; 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 made surer, to which ye do well taking heed (as to a lamp shining in an obscure place) until the day dawn and the morning star arise in your hearts;

Isaiah 8:16

Bind up the testimony, seal the law among my disciples.

Psalm 19:7-8

The law of Jehovah is perfect, restoring the soul; the testimony of Jehovah is sure, making wise the simple;

Psalm 119:130

The entrance of thy words giveth light, giving understanding unto the simple.

Proverbs 4:18

But the path of the righteous is as the shining light, going on and brightening until the day be fully come.

Isaiah 1:10

Hear the word of Jehovah, rulers of Sodom; give ear unto the law of our God, people of Gomorrah!

Isaiah 30:8-11

Now go, write it before them on a tablet, and record it in a book, that it may be for the time to come, as a witness for ever,

Jeremiah 8:9

The wise men are ashamed, they are dismayed and taken: behold, they have rejected Jehovah's word; and what wisdom is in them?

Hosea 6:3

and we shall know, we shall follow on to know Jehovah: his going forth is assured as the morning dawn; and he will come unto us as the rain, as the latter rain which watereth the earth.

Malachi 4:2

And unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth and leap like fatted calves.

Matthew 6:23

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

Matthew 22:29

And Jesus answering said to them, Ye err, not knowing the scriptures nor the power of God.

Mark 7:7-9

But in vain do they worship me, teaching as their teachings commandments of men.

Luke 10:26

And he said to him, What is written in the law? how readest 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, for ye think that in them ye have life eternal, and they it is which bear witness concerning me;

John 5:46-47

for if ye had believed Moses, ye would have believed me, for he wrote of me.

Acts 17:11

And these were more noble than those in Thessalonica, receiving the word with all readiness of mind, daily searching the scriptures if these things were so.

Romans 1:22

professing themselves to be wise, they became fools,

Galatians 3:8-29

and the scripture, foreseeing that God would justify the nations on the principle of faith, announced beforehand the glad tidings to Abraham: In thee all the nations shall be blessed.

Galatians 4:21-22

Tell me, ye who are desirous of being under law, do ye not listen to the law?

2 Timothy 3:15-17

and that from a child thou hast known the sacred letters, which are able to make thee wise unto salvation, through faith which is in Christ Jesus.

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.

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 record it in a book, that it may be for the time to come, as a witness for ever,
Psalm 19:7
The law of Jehovah is perfect, restoring the soul; the testimony of Jehovah is sure, making wise the simple;
Psalm 119:130
The entrance of thy words giveth light, giving understanding unto the simple.
Jeremiah 8:9
The wise men are ashamed, they are dismayed and taken: behold, they have rejected Jehovah's word; and what wisdom is in them?
Micah 3:6
therefore ye shall have night without a vision; and it shall be dark unto you, without divination; and the sun shall go down upon the prophets, and the day shall be black over them.
Matthew 6:23
but if thine eye be wicked, thy whole body will be dark. If therefore the light that is in thee be darkness, how great the darkness!
Matthew 22:29
And Jesus answering said to them, Ye err, not knowing the scriptures nor the power of God.
Mark 7:7
But in vain do they worship me, teaching as their teachings commandments of men.
Romans 1:22
professing themselves to be wise, they became fools,
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.

Light

Proverbs 4:18
But the path of the righteous is as the shining light, going on and brightening until the day be fully come.
Hosea 6:3
and we shall know, we shall follow on to know Jehovah: his going forth is assured as the morning dawn; and he will come unto us as the rain, as the latter rain which watereth the earth.
Malachi 4:2
And unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth and leap like fatted calves.
2 Peter 1:19
And we have the prophetic word made surer, to which ye do well taking heed (as to a lamp shining in an obscure place) until the day dawn and the morning star arise in your hearts;

General references

Numbers 8:2
Speak unto Aaron, and say unto him, When thou lightest the lamps, the seven lamps shall give light over against the candlestick.
Micah 5:12
And I will cut off sorceries out of thy hand; and thou shalt have no soothsayers.
Matthew 14:4
For John said to him, It is not lawful for thee to have her.
Luke 10:26
And he said to him, What is written in the law? how readest thou?