Jer 9:4-8
In Jer 9:4 these sinful ways are exposed in yet stronger words. יהתל, uncontracted form of the imperf. Hiph. of תּלל, trip up, deceive. On the infin. העוה, cf. Ew. §238, e, and Gesen. §75, Rem. 17. They weary themselves out, put themselves to great labour, in order to deal corruptly; נלאה as in Jer 20:9; Isa 16:12, elsewhere to be weary of a thing; cf. Jer 6:11; Jer 15:6. - In Jer 9:5 the statement returns to the point at which it commenced: thy sitting (dwelling) is in the midst of deceit. In deceit, i.e., in the state of their mind, directed as it is by deceit and cheating, they refuse to know me, i.e., they are resolved to have nothing to do with the knowledge of God, because in that case they must give up their godless ways.
By reason of this depravity, the Lord must purge His people by sore judgments. He will melt it in the fire of affliction (Isa 48:10), to separate the wicked: cf. Isa 1:25; Zec 13:9; and on בּחן, Jer 6:27. For how should I do, deal? Not: what dreadful judgments shall I inflict (Hitz., Gr.), in which case the grounding כּי would not have its proper force; but: I can do none otherwise than purge. Before the face of, i.e., by reason of, the daughter, because the daughter of my people behaves herself as has been described in Jer 9:2-4, and as is yet to be briefly repeated in Jer 9:7. The lxx have paraphrased מפּני: ἀπὸ προσώπου πονηρίας. This is true to the sense, but it is unfair to argue from it, as Ew., Hitz., Gr. do, that רעת has been dropped out of the Hebrew text and should be restored. - In Jer 9:7 what has been said is recapitulated shortly, and then in Jer 9:8 the necessity of the judgment is shown. חץ שׁוחט, a slaying, slaughtering, i.e., murderous arrow. Instead of this Chet., which gives a good sense, the Keri gives שׁחוּט, which, judging from the Chald. translation, is probably to be translated sharpened. But there is no evidence for this sig., since שׁחוּט occurs only in connection with זהב, 1Ki 10:16, and means beaten, lit., spread gold. At מרמה דבּר the plural passes into the singular: he (one of them) speaks; cf. Psa 55:22. ארב for insidious scheming, as in Hos 7:6. With Jer 9:8 cf. Jer 5:9, Jer 5:29.