Psalm 141:3



Verse 3. Set a watch, O LORD, before my mouth. That mouth had been used in prayer, it would be a pity it should ever be defiled with untruth, or pride, or wrath; yet so it will become unless carefully watched, for these intruders are ever lurking about the door. David feels that with all his own watchfulness he may be surprised into sin, and so he begs the Lord himself to keep him. When Jehovah sets the watch the city is well guarded: when the Lord becomes the guard of our mouth the whole man is well garrisoned. Keep the door of my lips. God has made our lips the door of the mouth, but we cannot keep that door of ourselves, therefore do we entreat the Lord to take the rule of it. O that the Lord would both open and shut our lips, for we can do neither the one nor the other aright if left to ourselves. In times of persecution by ungodly men we are peculiarly liable to speak hastily, or evasively, and therefore we should be specially anxious to be preserved in that direction from every form of sin. How condescending is the Lord! We are ennobled by being door keepers for him, and yet he deigns to be a door keeper for us.

Incline not my heart to any evil thing. It is equivalent to the petition, "Lead us not into temptation." O that nothing may arise in providence which would excite our desires in a wrong direction. The Psalmist is here careful of his heart. He who holds the heart is lord of the man: but if the tongue and the heart are under God's care all is safe. Let us pray that he may never leave us to our own inclinations, or we shall soon decline from the right.

To practise wicked works with men that work iniquity. The way the heart inclines the life soon tends: evil things desired bring forth wicked things practised. Unless the fountain of life is kept pure the streams of life will soon be polluted. Alas, there is great power in company: even good men are apt to be swayed by association; hence the fear that we may practise wicked works when we are with wicked workers. We must endeavour not to be with them lest we sin with them. It is bad when the heart goes the wrong way alone, worse when the life runs in the evil road alone; but it is apt to increase unto a high degree of ungodliness when the backslider runs the downward path with a whole horde of sinners around him. Our practice will be our perdition if it be evil: it is an aggravation of sin rather than an excuse for it to say that it is our custom and our habit. It is God's practice to punish all who make a practice of iniquity. Good men are horrified at the thought of sinning as others do; the fear of it drives them to their knees. Iniquity, which, being interpreted, is a want of equity, is a thing to be shunned as we would avoid an infectious disease. And let me not eat of their dainties. If we work with them we shall soon eat with them. They will bring out their sweet morsels, and delicate dishes, in the hope of binding us to their service by the means of our palates. The trap is baited with delicious meats that we may be captured and become meat for their malice. If we would not sin with men we had better not sit with them, and if we would not share their wickedness we must not share their wantonness.



Verse 3. Set a watch, O LORD, before my mouth, etc.

  1. A man would never use this language without a conviction of the importance of the subject ... Everything is transacted by speech, in natural, civil, and religious concerns: how much, therefore, depends on the good or evil management of the tongue! What an ardour of holy love and friendship, or of anger and malice, may a few words fan into a flame! The tongue is the principal instrument in the cause of God; and it is the chief engine of the devil; give him this, and lie asks no more -- there is no mischief or misery he will not accomplish by it. The use, the influence of it, therefore, is inexpressible; and words are never to be considered only as effects, but as causes, the operation of which can never be fully imagined. Let us suppose a case, a case, I fear, but too common. You drop, in the thoughtlessness of conversation, or for the sake of argument or wit, some irreligious, sceptical, expression -- it lodges in the memory of a child, or a servant -- it takes root in a soil favourable to such seed -- it gradually springs up, and brings forth fruit, in the profanation of the Sabbath; the neglect of the means of grace; in the reading of improper books; in the choice of dangerous companions; -- who can tell where it will end? But there is a Being who knows where it began. It will be acknowledged that some have it in their power, by reason of their office, talents, and influence, to do much more injury than others; but none are so insignificant as to be harmless.

  1. A man would never use this language without a conviction that he is in danger of transgression. And if David was conscious of a liableness to err, shall we ever presume on our safety? Our danger arises from the depravity of our nature. "The heart is deceitful above all things, and desperately wicked"; and "who can bring a clean thing out of an unclean?" Our danger arises from the contagion of example. There is nothing in which mankind are more universally culpable than in the disorders of speech. Yet with these we are constantly surrounded; and to these we have been accustomed from our impressible infancy. We are in danger from the frequency of speech. "In the multitude of words there wanteth not sin." We must of necessity speak often; but we often speak without necessity. Duty calls us to intermingle much with our fellow creatures; but we are too little in the closet, and too much in the crowd -- and when we are in company we forget the admonition, "Let every man be swift to hear, and slow to speak."
  2. A man would never use this language without a conviction of inability to preserve himself. The Bible teaches us this truth, not only doctrinally, but historically. The examples of good men, and men eminent in godliness, confirm it in the very article before us. Moses, the meekest man in the earth, "spake unadvisedly with his lips." You have heard of the patience of Job, but he "cursed the day of his birth"; and Jeremiah, the prophet of the Lord, did the same. Peter said, "Though all men should be offended because of thee, I will never be offended; though I should die with thee, yet will I not deny thee." But how did he use his tongue a few hours after? Then "began he to curse and to swear, saying, I know not the man!"
  3. A man would never use this language without a conviction of the wisdom of applying to God for the assistance he needs. Prayer is the effect of our weakness, and the expression of our dependence. It confesses the agency of God.
    1. In the first place -- God is equal to our preservation.
    2. His succours are not to be obtained without prayer.
    3. Prayer always brings the assistance it implores. -- Condensed from W. Jay's Sermon on "The Regulation of the Tongue."

Verse 3. Set a watch, O LORD, before my mouth, etc. Watching and prayer are often joined together. We are best kept when recommended into God's hand. I do observe here, First, That unadvised and passionate speeches do easily drop from us in our troubles, especially in our persecution. Secondly, That a godly, conscientious man is very tender of these, as of all evil. He that would live in communion with God for the present, and hope to appear with comfort before him hereafter, is sensible of the least thing that tends to God's displeasure, and God's dishonour: this is the true spirit of one that will be owned by Christ at the last day. Thirdly, There is no way to prevent being provoked to impatience and rashness of speech, or any evil, but by keeping a watch, and renewing our obligations to God. Fourthly, Whoever would keep a watch must call in the aid and assistance of God's grace; "Lord, set a watch before my mouth." --Thomas Manton.

Verse 3. Set a watch, O Lord, before my mouth, etc. Thus holy men have kept the sessions at home, and made their hearts the foremen of the jury, and examined themselves as we examine others. The fear of the Lord stood at the door of their souls, to examine every thought before it went in, and at the door of their lips, to examine every word before it went out, whereby they escaped a thousand sins which we commit, as though we had no other work. --Henry Smith.

Verse 3. Set a watch, O Lord, before my mouth. Nature having made my lips to be a door to my words, let grace keep that door, that no word may be suffered to go out which may any way tend to the dishonour of God, or the hurt of others. --Matthew Henry.

Verse 3. Set a watch, etc. Let a seal for words not to be spoken lie on the tongue. A watch over words is better than over wealth. --Lucian.

Verse 3. Keep the door of my lips. That it move not creaking and complaining, as on rusty hinges, for want of the oil of joy and gladness. David had somewhat to do with his tongue, as we see ( Psalms 39:1 Psalms 39:3 ); and when he had carted the ark, how untowardly he spake, as if the fault were more in God than himself, that there was such a breach made in Uzzah (1Ch 13:12). It was but need thus to pray. --John Trapp.



Verse 3.

  1. The mouth a door.
  2. A watchman needed.
  3. The Lord fulfilling that office.