David here lays down this great doctrine, That the God with whom we have to do has a perfect knowledge of us, and that all the motions and actions both of our inward and of our outward man are naked and open before him.

I.He lays down this doctrine in the way of an address to God; he says it to him, acknowledging it to him, and giving him the glory of it. Divine truths look fully as well when they are prayed over as when they are preached over, and much better than when they are disputed over. When we speak of God to him himself we shall find ourselves concerned to speak with the utmost degree both of sincerity and reverence, which will be likely to make the impressions the deeper.

II.He lays it down in a way of application to himself, not, "Thou hast known all," but, "Thou hast known me; that is it which I am most concerned to believe and which it will be most profitable for me to consider." Then we know these things for our good when we know them for ourselves, Job 5:27. When we acknowledge, "Lord, all souls are thine," we must add, "My soul is thine; thou that hatest all sin hatest my sin; thou that art good to all, good to Israel, art good to me." So here, "Thou hast searched me, and known me; known me as thoroughly as we know that which we have most diligently and exactly searched into." David was a king, and the hearts of kings are unsearchable to their subjects (Pro 25:3), but they are not so to their Sovereign.

III.He descends to particulars: "Thou knowest me wherever I am and whatever I am doing, me and all that belongs to me." 1. "Thou knowest me and all my motions, my down-sitting to rest, my up-rising to work, with what temper of mind I compose myself when I sit down and stir up myself when I rise up, what my soul reposes itself in as its stay and support, what it aims at and reaches towards as its felicity and end. Thou knowest me when I come home, how I walk before my house, and when I go abroad, on what errands I go." 2. "Thou knowest all my imaginations. Nothing is more close and quick than thought; it is always unknown to others; it is often unobserved by ourselves, and yet thou understandest my thought afar off. Though my thoughts be ever so foreign and distant from one another, thou understandest the chain of them, and canst make out their connexion, when so many of them slip my notice that I myself cannot." Or, "Thou understandest them afar off, even before I think them, and long after I have thought them and have myself forgotten them." Or, "Thou understandest them from afar; from the height of heaven thou seest into the depths of the heart," Psa 33:14. 3. "Thou knowest me and all my designs and undertakings; thou compassest every particular path; thou siftest (or winnowest) my path" (so some), "so as thoroughly to distinguish between the good and evil of what I do," as by sifting we separate between the corn and the chaff. All our actions are ventilated by the judgment of God, Psa 17:3. God takes notice of every step we take, every right step and every by-step. He is acquainted with all our ways, intimately acquainted with them; he knows what rule we walk by, what end we walk towards, what company we walk with. 4. "Thou knowest me in all my retirements; thou knowest my lying down; when I am withdrawn from all company, and am reflecting upon what has passed all day and composing myself to rest, thou knowest what I have in my heart and with what thought I go to bed." 5. "Thou knowest me, and all I say (Psa 139:4): There is not a word in my tongue, not a vain word, nor a good word, but thou knowest it altogether, knowest what it meant, from what thought it came, and with what design it was uttered. There is not a word at my tongue's end, ready to be spoken, yet checked and kept in, but thou knowest it." When there is not a word in my tongue, O Lord! thou knowest all (so some read it); for thoughts are words to God. 6. "Thou knowest me in every part of me: Thou hast beset me behind and before, so that, go which way I will, I am under thy eye and cannot possibly escape it. Thou hast laid thy hand upon me, and I cannot run away from thee." Wherever we are we are under the eye and hand of God. perhaps it is an allusion to the physician's laying his hand upon his patient to feel how his pulse beats or what temper he is in. God knows us as we know not only what we see, but what we feel and have our hands upon. All his saints are in his hand.

IV.He speaks of it with admiration (Psa 139:6): It is too wonderful for me; it is high. 1. "Thou hast such a knowledge of me as I have not of myself, nor can have. I cannot take notice of all my own thoughts, nor make such a judgment of myself as thou makest of me."? 2. "It is such a knowledge as I cannot comprehend, much less describe. That thou knowest all things I am sure, but how I cannot tell." We cannot by searching find out how God searches and finds out us; nor do we know how we are known.

O Lord, thou hast searched me, and known me. The omniscience of God reaches to all persons and things; but the psalmist only takes notice of it as respecting himself. God knows all men in general, and whatever belongs to them; he knows his own people in a special manner; and he knows their particular persons, as David and others: and this knowledge of God is considered after the manner of men, as if it was the fruit of search, to denote the exquisiteness of it; as a judge searches out a cause, a physician the nature of a disease, a philosopher the reason of things; who many times, after all their inquiries, fail in their knowledge; but the Lord never does: his elect lie in the ruins of the fall, and among the men of the world; he searches them out and finds them; for be knows where they are, and the time of finding them, and can distinguish them in a crowd of men from others, and notwithstanding the sad case they are in, and separates them from them; and he searches into them, into their most inward part, and knows them infinitely better than their nearest relations, friends and acquaintance do; he knows that of them and in them, which none but they themselves know; their thoughts, and the sin that dwells in them: yea, he knows more of them and in them than they themselves, Jer 17:9. And he knows them after another manner than he does other men: there are some whom in a sense he knows not; but these he knows, as he did David, so as to approve of, love and delight in, Mat 7:23.

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Psalms 139:2

psa 139:2

psa 139:2

psa 139:2Thou knowest my downsitting and mine uprising,.... Here the psalmist proceeds to observe the particular circumstances and actions of his life, which were known to God; as his "downsitting", either to take rest, as weary persons do. Schultens (a) explains it of the quiet rest in sleep; this the Lord knew when he betook himself to it, and to whose care he committed himself and family; under whose protection he laid himself down, and on whom he depended for safety, Psa 4:8. Or, since lying down to sleep is afterwards mentioned, this may respect sitting down at table to eat and drink; when the Lord knows whether men use the creatures aright, or abuse them; whether they receive their food with thankfulness, and eat and drink to the glory of God: or else this downsitting was to read the word of God, and meditate upon it; so the Targum paraphrases it,

"my sitting down to study the law.''

When men do this, the Lord knows whether in reading they understand what they read, or read attentively and with affection; whether it is to their comfort and edification, and for doctrine, reproof, correction, and instruction in righteousness; whether their meditation on it is sweet, and is attended with profit and pleasure. "Uprising" may respect either rising from bed, when the Lord knows whether the heart is still with him, Psa 139:18; what sense is had of the divine protection and sustentation, and what thankfulness there is for the mercies of the night past; and whether the voice of prayer and praise is directed to him in the morning, as it should be, Psa 3:5; or else rising from the table, when the Lord knows whether a man's table has been his snare, and with what thankfulness he rises from it for the favours he has received. The Targum interprets this of rising up to go to war; which David did, in the name and strength, and by the direction, of the Lord;

thou understandest my thought afar off; God knows not only his own thoughts, but the thoughts of men, which none but themselves know; by this Christ appears to be truly God, the omniscient God, being a discerner of the thoughts and intents of the heart, Mat 9:3, Heb 4:12. God knows what thoughts his people have of him, and of his lovingkindness in Christ; what thoughts they have of Christ himself, his person, offices, and grace; what thoughts they have of themselves, their state, and condition: he knows all their vain thoughts, and complains of them, and which also they hate; and all their good thoughts, for they come from him. And he knows them "afar off", or "of old" (b), even before they are; so Aben Ezra interprets it, a long time past, and compares it with Jer 31:3; where the same word is rendered "of old": God knows the thoughts of his people, as well as his own, from all eternity; see Isa 25:1; as he knew what they would say and do, so what they would think; he knows thoughts that are past long ago, and forgotten by men, or were unobserved when thought; how else should he bring them into judgment? or though he is afar off in the highest heavens, yet he sees into the hearts of men, and is privy to all their thoughts.

(a) Animadv. Philol. p. 181. (b) "q. d. dum illa longe abest", Piscator; "longe ante quam incidat in animum meum", Gejerus, & Campensis in Ibid.