21 I have not written to you as to them that know not the truth, but as to them that know it: and that no lie is of the truth.
1 John 2:21 Cross References - DouayRheims
Proverbs 1:5
5 A wise man shall hear, and shall be wiser: and he that understandeth shall possess governments.
Proverbs 9:8-9
Romans 15:14-15
14 And I myself also, my brethren, am assured of you that you also are full of love, replenished with all knowledge, so that you are able to admonish one another.
15 But I have written to you, brethren, more boldly in some sort, as it were putting you in mind, because of the grace which is given me from God,
2 Peter 1:12
12 For which cause, I will begin to put you always in remembrance of these things: though indeed you know them and are confirmed in the present truth.
Jude 1:5
5 I will therefore admonish you, though ye once knew all things, that Jesus, having saved the people out of the land of Egypt, did afterwards destroy them that believed not.