1 John 2:21

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

2 Peter 1:12

Wherefore, I will not neglect to put you always in remembrance of these things, although you know, and are established in the present truth.

Jude 1:5

I will therefore put you in remembrance, though you formerly knew this, that the Lord, having saved the people out of the land of Egypt, afterward destroyed them 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

Bible References

Because ye know not

2 Peter 1:12
Wherefore, I will not neglect to put you always in remembrance of these things, although you know, and are established in the present truth.