The heart of the wicked is little worth - כמעט kimat, is like little or nothing; or is like dross, while the tongue of the just is like silver. A sinner's heart is worth nothing, and is good for nothing; and yet because it is his most hidden part, he vaunts of its honesty, goodness, etc.! Yes, yes; it is very honest and good, only the devil is in it! that is all.

feed

Proverbs 12:18 There is that speaks like the piercings of a sword: but the tongue of the wise is health.

Proverbs 15:4 A wholesome tongue is a tree of life: but perverseness therein is a breach in the spirit.

Job 4:3,4 Behold, you have instructed many, and you have strengthened the weak hands...

Job 23:12 Neither have I gone back from the commandment of his lips; I have esteemed the words of his mouth more than my necessary food.

Job 23:12 Neither have I gone back from the commandment of his lips; I have esteemed the words of his mouth more than my necessary food.

Job 29:21,22 To me men gave ear, and waited, and kept silence at my counsel...

Psalm 37:30 The mouth of the righteous speaks wisdom, and his tongue talks of judgment.

Ecclesiastes 12:9,10 And moreover, because the preacher was wise, he still taught the people knowledge; yes, he gave good heed, and sought out...

Jeremiah 3:15 And I will give you pastors according to my heart, which shall feed you with knowledge and understanding.

Jeremiah 15:16 Your words were found, and I did eat them; and your word was to me the joy and rejoicing of my heart: for I am called by your name...

John 21:15-17 So when they had dined, Jesus said to Simon Peter, Simon, son of Jonas, love you me more than these? He said to him, Yes...

1 Peter 5:2 Feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre...

fools

Proverbs 1:29,31 For that they hated knowledge, and did not choose the fear of the LORD...

Proverbs 5:12,23 And say, How have I hated instruction, and my heart despised reproof...

Hosea 4:6 My people are destroyed for lack of knowledge: because you have rejected knowledge, I will also reject you...

Matthew 13:19 When any one hears the word of the kingdom, and understands it not, then comes the wicked one...

John 3:19,20 And this is the condemnation, that light is come into the world, and men loved darkness rather than light...

Romans 1:28 And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind...

wisdom

Proverbs 17:16 Why is there a price in the hand of a fool to get wisdom, seeing he has no heart to it?

Sanctions of Moral Law, Natural and Governmental.
In the discussion of this subject, I shall show-- I. What constitute the sanctions of law. 1. The sanctions of law are the motives to obedience, the natural and the governmental consequences or results of obedience and of disobedience. 2. They are remuneratory, that is, they promise reward to obedience. 3. They are vindicatory, that is, they threaten the disobedient with punishment. 4. They are natural, that is, happiness is to some extent naturally connected with, and the necessary consequence of, …
Charles Grandison Finney—Systematic Theology

How the Simple and the Crafty are to be Admonished.
(Admonition 12.) Differently to be admonished are the simple and the insincere. The simple are to be praised for studying never to say what is false, but to be admonished to know how sometimes to be silent about what is true. For, as falsehood has always harmed him that speaks it, so sometimes the hearing of truth has done harm to some. Wherefore the Lord before His disciples, tempering His speech with silence, says, I have many things to say unto you, but ye cannot bear them now (Joh. xvi. 12). …
Leo the Great—Writings of Leo the Great

Letter xv (Circa A. D. 1129) to Alvisus, Abbot of Anchin
To Alvisus, Abbot of Anchin He praises the fatherly gentleness of Alvisus towards Godwin. He excuses himself, and asks pardon for having admitted him. To Alvisus, Abbot of Anchin. [18] 1. May God render to you the same mercy which you have shown towards your holy son Godwin. I know that at the news of his death you showed yourself unmindful of old complaints, and remembering only your friendship for him, behaved with kindness, not resentment, and putting aside the character of judge, showed yourself …
Saint Bernard of Clairvaux—Some Letters of Saint Bernard, Abbot of Clairvaux