wolf, &c. As in Isa_11:6, Isa_11:7, Isa_11:9, which is Millennial, not eternal.
together = as one. Hebrew 'echad. Same word as "one" in Deu_6:4, i.e. one of others. Occurs in former part of Isaiah (Isa_4:1; Isa_5:10; Isa_6:2, Isa_6:6; Isa_9:14; Isa_10:17; Isa_19:18, &c.); and, in the latter part (Isa_47:9; Isa_51:2, &c.) See App-79.
dust. Never was the serpent's food. It is used as a powerful Figure of Speech, or Idiom, as in Psa_72:9 Compare Pro_20:17.
the serpent's, &c. = as for the serpent, dust shall be his food: i.e. the Old Serpent (Rev_20:2), who brought in all the sin and misery to the world and to Israel, will then be bound (Rev_20:1-3), and he will lick the dust, the symbol of his humiliation, disappointment, and defeat. Referring to the Figures of speech used in Gen_3:14. See App-19.