1 John 2:21

I have not sent you this letter because you have no knowledge of what is true, but because you have knowledge, and because that which is false has nothing in common with that which is true.

2 Peter 1:12

For this reason I will be ready at all times to keep your memory of these things awake, though you have the knowledge of them now and are well based in your present faith.

Proverbs 1:5

(The wise man, hearing, will get greater learning, and the acts of the man of good sense will be wisely guided:)

Proverbs 9:8-9

Do not say sharp words to a man of pride, or he will have hate for you; make them clear to a wise man, and you will be dear to him.

Romans 15:14-15

And I myself am certain of you, brothers, that you are full of what is good, complete in all knowledge, able to give direction to one another.

Jude 1:5

Now it is my purpose to put you in mind, though you once had knowledge of all these things, of how the Lord, having taken a people safely out of Egypt, later sent destruction on those who had no faith;

Treasury of Scripture Knowledge

Summary

I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.

General references

Bible References

Because ye know not

Proverbs 1:5
(The wise man, hearing, will get greater learning, and the acts of the man of good sense will be wisely guided:)
Proverbs 9:8
Do not say sharp words to a man of pride, or he will have hate for you; make them clear to a wise man, and you will be dear to him.
Romans 15:14
And I myself am certain of you, brothers, that you are full of what is good, complete in all knowledge, able to give direction to one another.
2 Peter 1:12
For this reason I will be ready at all times to keep your memory of these things awake, though you have the knowledge of them now and are well based in your present faith.

General references

Proverbs 9:9
Give teaching to a wise man, and he will become wiser; give training to an upright man, and his learning will be increased.
Isaiah 32:3
And the eyes of those who see will not be shut, and those who have hearing will give ear to the word.
John 10:5
They will not go after another who is not their keeper, but will go from him in flight, because his voice is strange to them.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain