Keil & Delitzsch

In this first address the prophet vindicates his call to be the preacher of the comfort of the approaching deliverance, and explains this comfort on the ground that Jehovah, who called him to this comforting proclamation, was the incomparably exalted Creator and Ruler of the world. The first part of this address (Isa 40:1-11) may be regarded as the prologue to the whole twenty-seven. The theme of the prophetic promise, and the irresistible certainty of its fulfilment, are here declared. Turning of the people of the captivity, whom Jehovah has neither forgotten nor rejected, the prophet commences thus in Isa 40:1 : "Comfort ye, comfort ye may people, saith your God." This is the divine command to the prophets. Nachămū (piel, literally, to cause to breathe again) is repeated, because of its urgency (anadiplosis, as in Isa 41:27; Isa 43:11, Isa 43:25, etc.). The word יאמר, which does not mean "will say" here (Hofmann, Stier), but "saith" (lxx, Jerome) - as, for example, in Sa1 24:14 - affirms that the command is a continuous one. The expression "saith your God" is peculiar to Isaiah, and common to both parts of the collection (Isa 1:11, Isa 1:18; Isa 33:10; Isa 40:1, Isa 40:25; Isa 41:21; Isa 66:9). The future in all these passages is expressive of that which is taking place or still continuing. And it is the same here. The divine command has not been issued once only, or merely to one prophet, but is being continually addressed to many prophets. "Comfort ye, comfort ye my people," is the continual charge of the God of the exiles. who has not ceased to be their God even in the midst of wrath, to His messengers and heralds the prophets.