Isaiah 28:10

For it is precept upon precept, precept upon precept; line upon line, line upon line; here a little, there a little.

Isaiah 28:13

Therefore shall the word of Jehovah be unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, there a little; that they may go, and fall backward, and be broken, and snared, and taken.

Deuteronomy 6:1-6

Now this is the commandment, the statutes, and the ordinances, which Jehovah your God commanded to teach you, that ye might do them in the land whither ye go over to possess it;

2 Chronicles 36:15-16

And Jehovah, the God of their fathers, sent to them by his messengers, rising up early and sending, because he had compassion on his people, and on his dwelling-place:

Nehemiah 9:29-30

and testifiedst against them, that thou mightest bring them again unto thy law. Yet they dealt proudly, and hearkened not unto thy commandments, but sinned against thine ordinances, (which if a man do, he shall live in them,) and withdrew the shoulder, and hardened their neck, and would not hear.

Isaiah 5:4

What could have been done more to my vineyard, that I have not done in it? wherefore, when I looked that it should bring forth grapes, brought it forth wild grapes?

Jeremiah 11:7

For I earnestly protested unto your fathers in the day that I brought them up out of the land of Egypt, even unto this day, rising early and protesting, saying, Obey my voice.

Jeremiah 25:3-7

From the thirteenth year of Josiah the son of Amon, king of Judah, even unto this day, these three and twenty years, the word of Jehovah hath come unto me, and I have spoken unto you, rising up early and speaking; but ye have not hearkened.

Matthew 21:34-41

And when the season of the fruits drew near, he sent his servants to the husbandmen, to receive his fruits.

Philippians 3:1

Finally, my brethren, rejoice in the Lord. To write the same things to you, to me indeed is not irksome, but for you it is safe.

2 Timothy 3:7

ever learning, and never able to come to the knowledge of the truth.

Hebrews 5:12

For when by reason of the time ye ought to be teachers, ye have need again that some one teach you the rudiments of the first principles of the oracles of God; and are become such as have need of milk, and not of solid food.

Treasury of Scripture Knowledge

Summary

For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:

Bible References

For precept

Isaiah 28:13
Therefore shall the word of Jehovah be unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, there a little; that they may go, and fall backward, and be broken, and snared, and taken.
Isaiah 5:4
What could have been done more to my vineyard, that I have not done in it? wherefore, when I looked that it should bring forth grapes, brought it forth wild grapes?
Deuteronomy 6:1
Now this is the commandment, the statutes, and the ordinances, which Jehovah your God commanded to teach you, that ye might do them in the land whither ye go over to possess it;
2 Chronicles 36:15
And Jehovah, the God of their fathers, sent to them by his messengers, rising up early and sending, because he had compassion on his people, and on his dwelling-place:
Nehemiah 9:29
and testifiedst against them, that thou mightest bring them again unto thy law. Yet they dealt proudly, and hearkened not unto thy commandments, but sinned against thine ordinances, (which if a man do, he shall live in them,) and withdrew the shoulder, and hardened their neck, and would not hear.
Jeremiah 11:7
For I earnestly protested unto your fathers in the day that I brought them up out of the land of Egypt, even unto this day, rising early and protesting, saying, Obey my voice.
Jeremiah 25:3
From the thirteenth year of Josiah the son of Amon, king of Judah, even unto this day, these three and twenty years, the word of Jehovah hath come unto me, and I have spoken unto you, rising up early and speaking; but ye have not hearkened.
Matthew 21:34
And when the season of the fruits drew near, he sent his servants to the husbandmen, to receive his fruits.
Philippians 3:1
Finally, my brethren, rejoice in the Lord. To write the same things to you, to me indeed is not irksome, but for you it is safe.
2 Timothy 3:7
ever learning, and never able to come to the knowledge of the truth.
Hebrews 5:12
For when by reason of the time ye ought to be teachers, ye have need again that some one teach you the rudiments of the first principles of the oracles of God; and are become such as have need of milk, and not of solid food.

General references

Jeremiah 5:4
Then I said, Surely these are poor; they are foolish; for they know not the way of Jehovah, nor the law of their God:
Haggai 1:7
Thus saith Jehovah of hosts: Consider your ways.
Matthew 15:16
And he said, Are ye also even yet without understanding?
Mark 7:18
And he saith unto them, Are ye so without understanding also? Perceive ye not, that whatsoever from without goeth into the man, it cannot defile him;

American Standard Version Public Domain