Proverbs 4:23

Let us then guard our hearts, let us guard our mouths. Both have been written about. In this place we are bidden to take heed to our mouth; in another place you are told, "Keep your heart with all diligence." If David took heed, will you not take heed? If Isaiah had unclean lips—who said, "Woe is me, for I am undone, for I am a man, and have unclean lips"—if a prophet of the Lord had unclean lips, how shall we have them clean?…Your possession is your mind, your gold your heart, your silver your speech: "The words of the Lord are pure words, as silver tried in the fire." A good mind is also a good possession. And, further, a pure inner life is a valuable possession. Hedge in, then, this possession of yours, enclose it with thought, guard it with thorns, that is, with pious care, lest the fierce passions of the flesh should rush upon it and lead it captive, lest strong emotions should assault it, and, overstepping their bounds, carry off its vintage. Guard your inner self.

Gerontius of Petra said, 'Many people who are tempted by pleasures of the flesh do not sin with the body but lust with the mind; they keep their bodily virginity but lust in their heart. It is better then, beloved, to do what is written, …

We who knew these and similar sayings wish to observe this precept with the mystical meaning, namely, "Keep your heart with all diligence," that nothing of a demoniacal nature may enter into our minds or any spirit of our adversaries turn our imagination whither it chooses. But we pray that the light of the knowledge of the glory of God may shine in our hearts, and that the Spirit of God may dwell in our imaginations, and lead them to contemplate the things of God; for "as many as are led by the Spirit of God, they are the sons of God."

Solomon convinces us to chastise all these kinds of evil thoughts when he says, "Guard your heart with all vigilance, for life comes forth from it." Following his suggestion, let us act quickly, that if we transgress in any way in our thoughts by consenting …

With all vigilance guard your heart, etc. There are those who seem to live rightly to men, but because they do not do so with right intention, their life which was believed good is rejected by God, who looks into the depraved. Therefore, with all …

7 Wisdom is the principal thing; therefore get wisdom: and with all thy getting get understanding. 8 Exalt her, and she shall promote thee: she shall bring thee to honour, when thou dost embrace her. 9 She shall give to thine head an ornament of grace: a crown of glory shall she deliver to thee.

quarantine:scripture (2026-07-29) — verbatim-scripture

Keep thy heart with all diligence,....

A good reason given for this care, because out of it are the issues of life. Out of a heart well kept will flow living issues, good products, to the glory of God and the edification of others. Or, in general, all the actions of the life flow from the heart, and therefore keeping that is making the tree good and healing the springs.

Better, as in the margin, i. e., with more vigilance than men use over anything else. The words that follow carry on the same similitude. The fountains and wells of the East were watched over with special care. The heart is such a fountain, out of it flow the “issues” of life. Shall men let those streams be tainted at the fountain-head?

with all diligence--or, "above," or "more than all," custody (compare Margin), all that is kept (compare Eze 38:7), because the heart is the depository of all wisdom and the source of whatever affects life and character (Mt 12:35;

quarantine:debris (2026-07-29) — starts-lowercase+unbalanced-parens

WF I SHOULD VAINLY ATTEMPT to fashion my discourse after lofty models, I should this morning compare the human heart to the ancient city of Thebes, out of whose hundred gates multitudes of warriors were wont to march. As was the city, such were her armies, as was her inward strength, such were they who came forth of her. I might then urge the necessity of keeping the heart, because it is the metropolis of our manhood, the citadel and armory of our humanity.

WF I SHOULD VAINLY ATTEMPT to fashion my discourse after lofty models, I should this morning compare the human heart to the ancient city of Thebes, out of whose hundred gates multitudes of warriors were wont to march. As was the city, such were her armies, as was her inward strength, such were they who came forth of her. I might then urge the necessity of keeping the heart, because it is the metropolis of our manhood, the citadel and armory of our humanity. Let the chief fortress surrender to the enemy, and the occupation of the rest must be an easy task. Let the principal stronghold be possessed by evil, the whole land must be overrun thereby. Instead, however, of doing this, I shall attempt what possibly I may be able to perform, by a humble metaphor and a simple figure, which will be easily understood; I shall endeavor to set forth the wise man’s doctrine, that our life issues from the heart, and thus I shall labor to show the absolute necessity of keeping the heart with all diligence. You have seen the great reservoirs provided by our water companies, in which the water which is to supply hundreds of streets and thousands of houses is kept. Now, the heart is just the reservoir of man, and our life is allowed to flow in its proper season. That life may flow through different pipes—the mouth, the hand, the eye; but still all the issues of hand, of eye, of lip, derive their source from the great fountain and central reservoir, the heart; and hence there is no difficulty in showing the great necessity that exists for keeping this reservoir, the heart, in a proper state and condition, since otherwise that which flows through the pipes must be touted and corrupt. May the Holy Spirit now direct our meditations. Mere moralists very often forget the heart, and deal exclusively with the lesser powers.

Keep thy heart with all diligence - “Above all keeping,” guard thy heart. He who knows any thing of himself, knows how apt his affections are to go astray. For out of it are the issues of life - תוצאות חיים totseoth chaiyim, “the goings out of lives.” Is not this a plain allusion to the arteries which carry the blood from the heart through the whole body, and to the utmost extremities? As long as the heart is capable of receiving and propelling the blood, so long life is continued. Now as the heart is the fountain whence all the streams of life proceed, care must be taken that the fountain be not stopped up nor injured. A double watch for its safety must be kept up. So in spiritual things: the heart is the seat of the Lord of life and glory; and the streams of spiritual life proceed from him to all the powers and faculties of the soul. Watch with all diligence, that this fountain be not sealed up, nor these streams of life be cut off. Therefore “put away from thee a froward mouth and perverse lips - and let thy eyes look straight on.” Or, in other words, look inwardlook onward - look upward. I know that the twenty-third verse is understood as principally referring to the evils which proceed from the heart, and which must be guarded against; and the good purposes that must be formed in it, from which life takes its colouring. The former should be opposed; the latter should be encouraged and strengthened. If the heart be pure and holy, all its purposes will be just and good. If it be impure and defiled, nothing will proceed from it but abomination. But though all this be true, I have preferred following what I believe to be the metaphor in the text.