Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary

"Now then, I will tell you what I will do at once to my vineyard: take away its hedge, and it shall be for grazing; pull down its wall, and it shall be for treading down." Before "now then" (vattâh) we must imagine a pause, as in Isa 3:14. The Lord of the vineyard breaks the silence of the umpires, which indicates their consciousness of guilt. They shall hear from Him what He will do at once to His vineyard (Lamed in l'carmi, as, for example, in Deu 11:6). "I will do:" ani 'ōeh, fut. instans, equivalent to facturus sum (Ges. 134, 2, b). In the inf. abs. which follow He opens up what He will do. On this explanatory use of the inf. abs., see Isa 20:2; Isa 58:6-7. In such cases as these it takes the place of the object, as in other cases of the subject, but always in an abrupt manner (Ges. 131, 1). He would take away the mesucah, i.e., the green thorny hedge (Pro 15:19; Hos 2:8) with which the vineyard was enclosed, and would pull down the gârēd, i.e., the low stone wall (Num 22:24; Pro 24:31), which had been surrounded by the hedge of thorn-bushes to make a better defence, as well as for the protection of the wall itself, more especially against being undermined; so that the vineyard would be given up to grazing and treading down (lxx καταπα'τημα), i.e., would become an open way and gathering-place for man and beast.