*Minor differences ignored. Grouped by changes, with first version listed as example.
O Jehovah! thou hast searched me David declares, in the outset of this Psalm, that he does not come before God with any idea of its being possible to succeed by dissimulation, as hypocrites will take advantage of secret refuges to prosecute sinful indulgences, but that he voluntarily lays bare his innermost heart for inspection, as one convinced of the impossibility of deceiving God. It is thine, he says, O God! to discover every secret thought, nor is there anything which can escape thy notice, He then insists upon particulars, to show that his whole life was known to God, who watched him in all his motions -- when he slept, when he arose, or when he walked abroad. The word r, rea, which we have rendered thought, signifies also a friend or companion, on which account some read -- thou knowest what is nearest me afar off, a meaning more to the point than any other, if it could be supported by example. The reference would then be very appropriately to the fact that the most distant objects are contemplated as near by God. Some for afar off read beforehand, in which signification the Hebrew word is elsewhere taken, as if he had said -- O Lord, every thought which I conceive in my heart is already known to thee beforehand. But I prefer the other meaning, That God is not confined to heaven, indulging in a state of repose, and indifferent to human concerns, according to the Epicurean idea, and that however far off we may be from him, he is never far off from us. The verb zrh, zarah, means to winnow as well as to compass, so that we may very properly read the third verse -- thou winnowest my ways, [1] a figurative expression to denote the bringing of anything which is unknown to light. The reader is left to his own option, for the other rendering which I have adopted is also.appropriate. There has been also a difference of opinion amongst interpreters as to the last clause of the verse. The verb skn, sachan, in the Hiphil conjugation, as here, signifies to render successful, which has led some to think that David here thanks God for crowning his actions with success; but this is a sense which does not at all suit the scope of the Psalmist in the context, for he is not speaking of thanksgiving. Equally forced is the meaning given to the words by others -- Thou hast made me to get acquainted or accustomed with my ways; as if he praised God for being endued with wisdom and counsel. Though the verb be in the Hiphil, I have therefore felt no hesitation in assigning it a neuter signification -- Lord, thou art accustomed to my ways, so that they are familiar to thee.
1 - Piscator, Campensis, Pagninus, Luther, and our English Version, read "thou compassest." This no doubt gives the meaning, of the original, though not the precise idea, which is noticed on the margin of our English Bible to be "winnowest." The verb zrh, zarah, employed, signifies to disperse, to fan, to ventilate, to winnow; and here it denotes that as men separate the corn from the chaff, so God separates between, or investigates, the good and the bad in the daily conduct of men. Hence the Septuagint reads exichniasas, "thou hast investigated." Bishop Hare, who renders "thou dost compass," supposes it to be a metaphor taken from hunting. "Winnowing," says Archbishop Secker," would sound uncouth But Mudge hath hit on the word siftest, which, though an idea somewhat different, suits very well."
O Lord, thou hast searched me - The word rendered searched, has a primary reference to searching the earth by boring or digging, as for water or metals. See Job 28:3. Then it means to search accurately or closely.
And known me - As the result of that search, or that close investigation. Thou seest all that is in my heart. Nothing is, or can be, concealed from thee. It is with this deep consciousness that the psalm begins; and all that follows is but an expansion and application of this idea. It is of much advantage in suggesting right reflections on our own character, to have this full consciousness that God knows us altogether; that he sees all that there is in our heart; that he has been fully acquainted with our past life.
O Lord, thou hast searched me - חקרתני chakartani; thou hast investigated me; thou hast thoroughly acquainted thyself with my whole soul and conduct.
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, Jeremiah 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, Matthew 7:23.
God has perfect knowledge of us, and all our thoughts and actions are open before him. It is more profitable to meditate on Divine truths, applying them to our own cases, and with hearts lifted to God in prayer, than with a curious or disputing frame of mind. That God knows all things, is omniscient; that he is every where, is omnipresent; are truths acknowledged by all, yet they are seldom rightly believed in by mankind. God takes strict notice of every step we take, every right step and every by step. He knows what rule we walk by, what end we walk toward, what company we walk with. When I am withdrawn from all company, thou knowest what I have in my heart. There is not a vain word, not a good word, but thou knowest from what thought it came, and with what design it was uttered. Wherever we are, we are under the eye and hand of God. We cannot by searching find how God searches us out; nor do we know how we are known. Such thoughts should restrain us from sin.
The Aramaic forms in this strophe are the ἅπαξ λεγομ רע (ground-form רעי) in Psalm 139:2 and Psalm 139:17, endeavour, desire, thinking, like רעוּת and רעיון in the post-exilic books, from רעה (רעא), cupere, cogitare; and the ἅπ. λεγ. רבע in Psalm 139:3, equivalent to רבץ, a lying down, if רבעי be not rather an infinitive like בּלעי in Job 7:19, since ארחי is undoubtedly not inflected from ארח, but, as being infinitive, like עברי in Deuteronomy 4:21, from ארח; and the verb ארח also, with the exception of this passage, only occurs in the speeches of Elihu (Job 34:8), which are almost more strongly Aramaizing than the Book of Job itself. Further, as an Aramaizing feature we have the objective relation marked by Lamed in the expression בּנתּה לרעי, Thou understandest my thinking, as in Psalm 116:16; Psalm 129:3; Psalm 135:11; Psalm 136:19. The monostichic opening is after the Davidic style, e.g., Psalm 23:1. Among the prophets, Isaiah in particular is fond of such thematic introductions as we have here in Psalm 139:1. On ותּדע instead of ותּדעני vid., on Psalm 107:20; the pronominal object stands once beside the first verb, or even beside the second (2-Kings 9:25), instead of twice (Hitzig). The "me" is then expanded: sitting down, rising up, walking and lying, are the sum of human conditions or states. רעי is the totality or sum of the life of the spirit and soul of man, and דּרכי the sum of human action. The divine knowledge, as ותּדע says, is the result of the scrutiny of man. The poet, however, in Psalm 139:2 and Psalm 139:3 uses the perfect throughout as a mood of that which is practically existing, because that scrutiny is a scrutiny that is never unexecuted, and the knowledge is consequently an ever-present knowledge. מרחוק is meant to say that He sees into not merely the thought that is fully fashioned and matured, but even that which is being evolved. זרית from זרה is combined by Luther (with Azulai and others) with זר, a wreath (from זרר, constringere, cingere), inasmuch as he renders: whether I walk or lie down, Thou art round about me (Ich gehe oder lige, so bistu umb mich). זרה ought to have the same meaning here, if with Wetzstein one were to compare the Arabic, and more particularly Beduin, drrâ, dherrâ, to protect; the notion of affording protection does not accord with this train of thought, which has reference to God's omniscience: what ought therefore to be meant is a hedging round which secures its object to the knowledge, or even a protecting that places it in security against any exchanging, which will not suffer the object to escape it.
(Note: This Verb. tert. Arab. w et y is old, and the derivative dherâ, protection, is an elegant word; with reference to another derivative, dherwe, a wall of rock protecting one from the winds, vid., Job, at Job 24:7, note. The II form (Piel) signifies to protect in the widest possible sense, e.g., (in Neshwn, ii. 343b), "[Arab.] drâ 'l-šâh, he protected the sheep (against being exchanged) by leaving a lock of wool upon their backs when they were shorn, by which they might be recognised among other sheep.")
The Arabic ḏrâ, to know, which is far removed in sound, is by no means to be compared; it is related to Arab. dr', to push, urge forward, and denotes knowledge that is gained by testing and experimenting. But we also have no need of that Arab. ḏrâ, to protect, since we can remain within the range of the guaranteed Hebrew usage, inasmuch as זרה, to winnow, i.e., to spread out that which has been threshed and expose it to the current of the wind, in Arabic likewise ḏrrâ, (whence מזרה, midhrâ, a winnowing-fork, like רחת, racht, a winnowing-shovel), gives an appropriate metaphor. Here it is equivalent to: to investigate and search out to the very bottom; lxx, Symmachus, and Theodotion, ἐξιξηνίασας, after which the Italic renders investigasti, and Jerome eventilasti. הסכּין with the accusative, as in Job 22:21 with עם: to enter into neighbourly, close, familiar relationship, or to stand in such relationship, with any one; cogn. שׁכן, Arab. skn. God is acquainted with all our ways not only superficially, but closely and thoroughly, as that to which He is accustomed.
In Psalm 139:4 this omniscience of God is illustratively corroborated with כּי; Psalm 139:4 has the value of a relative clause, which, however, takes the form of an independent clause. מלּה (pronounced by Jerome in his letter to Sunnia and Fretela, 82, MALA) is an Aramaic word that has been already incorporated in the poetry of the Davidico-Salomonic age. כלּהּ signifies both all of it and every one. In Psalm 139:5 Luther has been misled by the lxx and Vulgate, which take צוּר in the signification formare (whence צוּרה, forma); it signifies, as the definition "behind and before" shows, to surround, encompass. God is acquainted with man, for He holds him surrounded on all sides, and man can do nothing, if God, whose confining hand he has lying upon him (Job 9:23), does not allow him the requisite freedom of motion. Instead of דּעתּך (XX ἡ γνῶσίς σου) the poet purposely says in Psalm 139:6 merely דּעת: a knowledge, so all-penetrating, all-comprehensive as God's knowledge. The Ker reads פּליאה, but the Chethb פּלאיּה is supported by the Chethb פּלאי in Judges 13:18, the Ker of which there is not פּליא, but פּלי (the pausal form of an adjective פּלי, the feminine of which would be פּליּה). With ממּנּי the transcendence, with נשׂגּבה the unattainableness, and with להּ לא־אוּכל the incomprehensibleness of the fact of the omniscience of God is expressed, and with this, to the mind of the poet, coincides God's omnipresence; for true, not merely phenomenal, knowledge is not possible without the immanence of the knowing one in the thing known. God, however, is omnipresent, sustaining the life of all things by His Spirit, and revealing Himself either in love or in wrath - what the poet styles His countenance. To flee from this omnipresence (מן, away from), as the sinner and he who is conscious of his guilt would gladly do, is impossible. Concerning the first אנּה, which is here accented on the ultima, vid., on Psalm 116:4.
*More commentary available at chapter level.