1 John 2:21

I write to you, not because you do not know the truth, but because you know it, and because no lie is of the truth.

2 Peter 1:12

Therefore I will always remind you of these things, even though you know them and are firmly established in the truth you now have.

Romans 15:14-15

I myself am satisfied about you, my brethren, that you yourselves are full of goodness, filled with all knowledge, and able to instruct one another.

Jude 1:5

Now I desire to remind you, though you were once for all fully informed, that the Lord who saved a people out of the land of Egypt, afterward destroyed those who did not believe.

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.

Because ye know not

General references

Bible References

Because ye know not

Romans 15:14
I myself am satisfied about you, my brethren, that you yourselves are full of goodness, filled with all knowledge, and able to instruct one another.
2 Peter 1:12
Therefore I will always remind you of these things, even though you know them and are firmly established in the truth you now have.

General references

John 10:5
A stranger they will not follow, but they will flee from him, for they do not know the voice of strangers."