The imagination. — Rather the “stubbornness” or “obstinacy.” The word is only found here and in Psalms 81:12 outside the writings of Jeremiah, who uses it eight times.
To add drunkenness to thirst — i.e., the indulgence of the desire to the desire itself; to add sin to temptation. The LXX. have a strange paraphrase, “So that the sinner shall not involve the righteous with him in destruction.” The thought seems to be that, perhaps, one idolater would not make so much difference to Israel. He would never involve the whole nation in destruction. The drunkard could not be the ruin of the thirsty, so to speak, and, therefore, he might do as he pleased, and might, in fact, escape punishment, being protected by the general prosperity of Israel. The quotation in the Epistle to the Hebrews meets this mistaken view admirably: “Lest any root of bitterness springing up trouble you, and thereby many be defiled.” The Targums render “to add sins of infirmity to sins of presumption,” a rendering which partly explains that of the LXX.