1 John 2:21

I do not write to you because you do not know it, but because you do know it, and because no lie can come from the truth.

2 Peter 1:12

Therefore I will always remind you of this, although you know it and are firmly grounded in the truth that you have.

Romans 15:14-15

For my part, as far as you are concerned, my brothers, I am convinced that you are already full of goodness of heart, endowed with perfect knowledge, and well qualified to instruct one another.

Jude 1:5

Now I want to remind you, though you know it all already, that he who brought the people safely out of the land of Egypt afterward destroyed the ones who did not believe,

Treasury of Scripture Knowledge

Summary

1 John 2:21

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

Romans 15:14

2 Peter 1:12

General references

John 10:5

Bible References

Because ye know not

For my part, as far as you are concerned, my brothers, I am convinced that you are already full of goodness of heart, endowed with perfect knowledge, and well qualified to instruct one another.

Therefore I will always remind you of this, although you know it and are firmly grounded in the truth that you have.

General references

But they will never follow a stranger but will run away from him, because they do not know the voices of strangers."