1 John 2:21
I have not written to you because you don't know the truth, but because you know it, and because no lie is of the truth.
2 Peter 1:12
Therefore I will not be negligent to remind you of these things, though you know them, and are established in the present truth.
Proverbs 1:5
that the wise man may hear, and increase in learning; that the man of understanding may attain to sound counsel:
Proverbs 9:8-9
Don't reprove a scoffer, lest he hate you. Reprove a wise man, and he will love you.
Romans 15:14-15
I myself am also persuaded about you, my brothers, that you yourselves are full of goodness, filled with all knowledge, able also to admonish others.
Jude 1:5
Now I desire to remind you, though you already know this, that the Lord, having saved a people out of the land of Egypt, afterward destroyed those who didn't believe.