Isaiah 47:15

“Thus shall they be unto thee with whom thou hast laboured, &c.] In training them up in those arts, and in consulting with them in cases of difficulty; in which they were of no service, and now in time of danger as useless as stubble, or a blaze of straw: even thy merchants from thy youth; either the above astrologers and diviners, who had been with them from the beginning of their state; and who had made merchandise of them, and were become rich as merchants by telling fortunes, and predicting things to come by the stars; which sense our version leads to by supplying the word “even”; or rather merchants in a literal sense, which Babylon abounded with from the first building of it; it being…”

“Thus, &c.--Such shall be the fate of those astrologers who cost thee such an amount of trouble and money. thy merchants, from thy youth--that is, with whom thou hast trafficked from thy earliest history, the foreigners sojourning in Babylon for the sake of commerce (Isa 13:14; Jer 51:6, Jer 51:9; Nah 3:16-17) [BARNES]. Rather, the astrologers, with whom Babylon had so many dealings (Isa 47:12-14) [HORSLEY]. to his quarter--literally, "straight before him" (Eze 1:9, Jer 50:16). Next: Isaiah Chapter 48”

“With whom thou hast labored - The multitude of diviners, astrologers, and merchants, with whom thou hast been connected and employed. The idea is, that Babylon had been the mart where all of them had been assembled. Even thy merchants from thy youth - Babylon was favorably situated for traffic; and was distinguished for it. Foreigners and strangers had resorted there, and it was filled with those who had come there for purposes of trade. The sense here is, that the same destruction which would come upon the diviners, would come on all who had been engaged there in traffic and merchandise. It does not mean that the individuals who were thus engaged would be destroyed, but that destruction…”

“Thus - Such comfortless and helpless creatures. They - Merchants who came from several countries to trade with Babylon. And the verse may be thus rendered; Thus (vain and unprofitable) shall they (thy sorcerers) with whom thou hast laboured be unto thee: (So here is only a transposition of words, than which nothing is more usual in scripture. Then follows another matter:) also thy merchants, or they with whom thou hast traded from thy youth, shall wander every one to his own quarter. Next: Isaiah Chapter 48”

“thy merchants: Isa 56:11; Eze 27:12-25; Rev 18:11-19 they shall: Babylon was replenished from all nations, by a concourse of people, whom Jeremiah ( Jer 50:37) calls "the mingled people." All these, at the approach of Cyrus, sought to escape to their several countries. Jer 51:6-9; Rev 18:15-17 Next: Isaiah Chapter 48”