Hebrews 5:12

For while on account of the length of time ye ought to be teachers, ye again have need that some one should teach you the first elements of the oracles of God, and are become such as have need of milk, and not of solid food.

Hebrews 6:1

Let us then, leaving the first principles of the doctrine of Christ, press on to perfection; not laying again the foundation of repentance from dead works, and of faith toward God,

Acts 7:38

This is he that was in the assembly in the wilderness with the anger who spake to him on Mount Sinai, and with our fathers; who received the living oracles to give to us;

1 Peter 2:2

as newborn babes, desire the spiritual, pure milk, that ye may grow thereby to salvation;

1 Corinthians 3:1-3

I also, brethren, was not able to speak to you as to spiritual men, but as those who are not spiritual, as to babes in Christ.

Hebrews 5:13

For every one that feedeth on milk is unacquainted with the word of righteousness; for he is a babe;

Colossians 3:16

Let the word of Christ dwell in you richly; in all wisdom teaching and admonishing one another with psalms, hymns, spiritual songs, in grace singing in your hearts to God;

Titus 2:3-4

that aged women likewise be in behavior as becometh holiness, not false accusers, not enslaved to much wine, teachers of what is good,

1 Peter 4:11

If any one speak, let him speak as uttering the oracles of God; if any minister, let him do it as from the ability which God giveth; that in all things God may be glorified through Jesus Christ, to whom be the glory and the dominion for ever and ever. Amen.

Matthew 17:17

Then Jesus answering said, Unbelieving and perverse generation! How long shall I be with you? How long shall I bear with you? Bring him hither to me.

Mark 9:19

He answereth and saith to them, O unbelieving generation! How long shall I be with you? How long shall I bear with you? Bring him to me.

1 Corinthians 14:19

yet in the church I would rather speak five words with my understanding, that I might also instruct others, than ten thousand words in an [unknown] tongue.

Philippians 3:1

Finally, my brethren, rejoice in the Lord; to write the same things to you, to me is not burdensome, and for you it is safe.

Romans 3:2

Great, every way. In the first place, because they were entrusted with the oracles of God.

Treasury of Scripture Knowledge

Summary

For when for the time ye ought to be teachers, ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.

The first

General references

Bible References

For the

Matthew 17:17
Then Jesus answering said, Unbelieving and perverse generation! How long shall I be with you? How long shall I bear with you? Bring him hither to me.
Mark 9:19
He answereth and saith to them, O unbelieving generation! How long shall I be with you? How long shall I bear with you? Bring him to me.

Teachers

1 Corinthians 14:19
yet in the church I would rather speak five words with my understanding, that I might also instruct others, than ten thousand words in an [unknown] tongue.
Colossians 3:16
Let the word of Christ dwell in you richly; in all wisdom teaching and admonishing one another with psalms, hymns, spiritual songs, in grace singing in your hearts to God;
Titus 2:3
that aged women likewise be in behavior as becometh holiness, not false accusers, not enslaved to much wine, teachers of what is good,

The first

Hebrews 6:1
Let us then, leaving the first principles of the doctrine of Christ, press on to perfection; not laying again the foundation of repentance from dead works, and of faith toward God,

The oracles

Acts 7:38
This is he that was in the assembly in the wilderness with the anger who spake to him on Mount Sinai, and with our fathers; who received the living oracles to give to us;
Romans 3:2
Great, every way. In the first place, because they were entrusted with the oracles of God.
1 Peter 4:11
If any one speak, let him speak as uttering the oracles of God; if any minister, let him do it as from the ability which God giveth; that in all things God may be glorified through Jesus Christ, to whom be the glory and the dominion for ever and ever. Amen.

As have

Hebrews 5:13
For every one that feedeth on milk is unacquainted with the word of righteousness; for he is a babe;
1 Corinthians 3:1
I also, brethren, was not able to speak to you as to spiritual men, but as those who are not spiritual, as to babes in Christ.
1 Peter 2:2
as newborn babes, desire the spiritual, pure milk, that ye may grow thereby to salvation;

General references

Matthew 15:16
And he said, Are ye too still without discernment?