Psa 140:1-3
The assimilation of the Nun of the verb נצר is given up, as in Psa 61:8; Psa 78:7, and frequently, in order to make the form more full-toned. The relative clause shows that אישׁ חמסים is not intended to be understood exclusively of one person. בּלב strengthens the notion of that which is deeply concealed and premeditated. It is doubtful whether יגוּרוּ signifies to form into troops or to stir up. But from the fact that גּוּר in Psa 56:7; Psa 59:4, Isa 54:15, signifies not congregare but se congregare, it is to be inferred that גּוּר in the passage before us, like גּרה (or התגּרה in Deu 2:9, Deu 2:24), in Syriac and Targumic גּרג, signifies concitare, to excite (cf. שׂוּר together with שׂרה, Hos 12:4.). In Psa 140:4 the Psalm coincides with Psa 64:4; Psa 58:5. They sharpen their tongue, so that it inflicts a fatal sting like the tongue of a serpent, and under their lips, shooting out from thence, is the poison of the adder (cf. Sol 4:11). עכשׁוּב is a ἅπαξ λεγομ. not from כּשׁב (Jesurun, p. 207), but from עכשׁ, Arab. ‛ks and ‛kš, root ‛k (vid., Fleischer on Isa 59:5, עכּבישׁ), both of which have the significations of bending, turning, and coiling after the manner of a serpent; the Beth is an organic addition modifying the meaning of the root.