√ ὅπως — what(-ever) how, iConjunction
hopōs: in order that Purpose, not bare sequence. The particle governs the subjunctive and binds v. 35 to v. 34 as its aim rather than its aftermath: the parables were the mode so that the word might be filled. Benson feels the weight and reaches for a looser rendering, "whereby was fulfilled," which is exactly the hinge the whole fulfilment debate turns on.
πληρωθῇplērōthēwas fulfilledG4137 √ πληρόω — to make replete, iVerbAorist Subjunctive Passive3rd Person Singular
plēroō: to make replete, to fill full Aorist subjunctive passive. Matthew's standing citation formula (cf. Matthew 1:22, 2:15, 2:17, 8:17, 12:17). What is "filled" here is not a prediction awaiting an event but a form of speech finding its full measure. Ellicott is candid that Psalm 78 "was in no sense predictive," and that the evangelist nonetheless "could use even here the familiar formula."
√ ὁ — the (sometimes to be supplied, at others omitted, in English idiom)ArticleNominative Neuter Singular
ῥηθὲνrhēthenwas spokenG2046 √ ἐρέω — an alternate for G2036 (ἔπω) in certain tensesVerbAorist Participle PassiveNominative Neuter Singular
ereō: to speak, to say (aorist passive participle) Nominative neuter singular, agreeing with the article τό: "the-thing-spoken." The passive keeps God unnamed as speaker while naming the prophet only as the channel, which is precisely the force of διά that follows.
√ διά — through (in very wide applications, local, causal, or occasional)Preposition
dia: through Instrument, not source.
√ ὁ — the (sometimes to be supplied, at others omitted, in English idiom)ArticleGenitive Masculine Singular
προφήτουprophētouprophetG4396 √ προφήτης — a foreteller ("prophet")NounGenitive Masculine Singular
prophētēs: a foreteller, one who speaks forth Which prophet is the live question of this verse. Gill argues for Asaph on the ground that he is called "Asaph the seer, 2 Chronicles 29:30 which is all one as a prophet," and that 1 Chronicles 25:1 has him prophesying with harps and cymbals. Ellicott notes the Sinaitic variant naming Isaiah, and that the heathen writer Porphyry used it before Jerome's time as proof of Matthew's ignorance. The received text leaves the prophet unnamed.
√ λέγω — properly, to "lay" forth, iVerbPresent Participle ActiveGenitive Masculine Singular
ἈνοίξωAnoixōI will openG455 √ ἀνοίγω — to open up (literally or figuratively, in various applications)VerbFuture Indicative Active1st Person Singular
anoigō: to open up Future indicative active, first person. The verb of opening what was shut: mouths, tombs, books, heavens. It is the Psalmist's "I" that Jesus is here made to speak, which is the whole christological weight of the citation.
√ ἐγώ — I, mePersonal / Possessive PronounGenitive 1st Person Singular
√ ὁ — the (sometimes to be supplied, at others omitted, in English idiom)ArticleAccusative Neuter Singular
√ στόμα — the mouth (as if a gash in the face)NounAccusative Neuter Singular
stoma: the mouth Strong's glosses it, with some violence, as "the mouth (as if a gash in the face)." The organ of speech stands for the teacher himself.
√ ἐν — "in," at, (up-)on, by, etcPreposition
παραβολαῖςparabolaisparablesG3850 √ παραβολή — a similitude ("parable"), iNounDative Feminine Plural
parabolē: a similitude The word Matthew found at the head of Psalm 78 and which, as Ellicott puts it, "was enough for him." Cambridge measures its breadth: the psalm that follows "is a review of the history of Israel from the Exodus to the reign of David. This indicates the somewhat wide sense given to 'parables' and 'dark sayings.'"
ἐρεύξομαιereuxomaiI will utterG2044 √ ἐρεύγομαι — to belch, iVerbFuture Indicative Middle1st Person Singular
ereugomai: to belch, to pour forth A violently concrete verb used only here in the New Testament. It answers the Hebrew of Psalm 78:2; Pulpit notes the Septuagint uses it at Psalm 19:2, and compares Psalm 119:171 and Psalm 145:7. What comes out has been stored a long while, and comes out under pressure.
κεκρυμμέναkekrymmenathings hiddenG2928 √ κρύπτω — to conceal (properly, by covering)VerbPerfect Participle Middle or PassiveAccusative Neuter Plural
kryptō: to conceal, properly by covering Perfect participle, middle or passive: not "hidden things" as a class but things hidden and standing hidden still, the concealment held in force up to the moment this mouth opens. The root is rare (18 verses) and load-bearing in this chapter: the Verifier confirms that Matthew 13:44, the treasure hidden in a field, shares G2928 with this verse, as does Matthew 11:25, where the Father has hidden these things from the wise and revealed them to infants. Concealment in this material is therefore something done, not an accident of obscurity, and the one who now uncovers it is the one who is nowhere said to have been surprised by it.
√ ἀπό — "off," iPreposition
καταβολῆςkatabolēs[the] foundationG2602 √ καταβολή — a deposition, iNounGenitive Feminine Singular
katabolē: a deposition, a casting down, a founding A rare noun (11 verses). Its New Testament home is the phrase "before / from the foundation of the world": the elect chosen there (Ephesians 1:4), the Lamb foreknown there (1 Peter 1:20), the kingdom prepared there (Matthew 25:34), the Son loved there (John 17:24). Matthew's parables are being located against that horizon.
κόσμουkosmou[of the] worldG2889 √ κόσμος — orderly arrangement, iNounGenitive Masculine Singular
kosmos: orderly arrangement, the ordered world Not raw matter but the arranged order. "From the casting-down of the ordered world" sets the date of the secret at the world's first ordering, which is why Poole reaches for Colossians 1:26, 1 Corinthians 2:7 and Romans 16:25 to gloss it.